USA annual real GDP 1910–60, with the years of the Great Depression (1929–1939) highlighted.

Unemployment rate in the US 1910–1960, with the years of the Great Depression (1929–1939) highlighted.

The Great Depression began with the Wall Street Crash of October, 1929 and rapidly spread worldwide. The market crash marked the beginning of a decade of high unemployment, poverty, low profits, deflation, plunging farm incomes, and lost opportunities for economic growth and personal advancement. Although its causes are still uncertain and controversial, the net effect was a sudden and general loss of confidence in the economic future.^[1] The usual explanations include numerous factors, especially high consumer debt, ill-regulated markets that permitted overoptimistic loans by banks and investors, the lack of high-growth new industries,^[2] all interacting to create a downward economic spiral of reduced spending, falling confidence, and lowered production.^[3]

Industries that suffered the most included construction, agriculture as dust-bowl conditions persisted in the agricultural heartland, shipping, mining, and logging as well as durable goods like automobiles and appliances that could be postponed. The economy reached bottom in the winter of 1932–33; then came four years of very rapid growth until 1937, when the Recession of 1937 brought back 1934 levels of unemployment.^[4] The depression caused major political changes in America. Three years into the depression, Herbert Hoover lost the 1932 presidential election to Franklin Delano Roosevelt in a sweeping landslide. Roosevelt's economic recovery plan, the New Deal, instituted unprecedented programs for relief, recovery and reform, and brought about a major realignment of American politics.

The Great Depression of the 1930s started with the stock market crash of October 1929.

Causes[link]

Current theories may be broadly classified into two main points of view. First, there is orthodox classical economics, monetarist, Keynesian, Austrian Economics and neoclassical economic theory, which focuses on the macroeconomic effects of money supply, including Mass production and consumption. Second, there are structural theories, including those of institutional economics, that point to underconsumption and over-investment (economic bubble), or to malfeasance by bankers and industrialists.^[3]

There are multiple originating issues: what factors set off the first downturn in 1929, what structural weaknesses and specific events turned it into a major depression, how the downturn spread from country to country, and why the economic recovery was so prolonged.^[5]

In terms of the initial 1931 downturn, historians emphasize structural factors and the stock market crash as well as bank failures, while economists point to Britain's decision to return to the gold standard at pre–World War I parities ($10.98 Pound).^[6] The vast economic cost of World War I weakened the ability of the world to respond to a major crisis.

Banks began to fail in October 1930 (one year after the crash) when farmers defaulted on loans. There was no federal deposit insurance during that time as bank failures were considered quite common. This worried depositors that they might have a chance of losing all their savings, therefore, people started to withdraw money and changed it into currency. As deposits taken out from the bank increased, the money multiplier decreased, which means that money circulation slowed down. This led to a decrease in the money supply, and an increase in interest rate and a significant decrease in aggregate investment.

The US government's commitment to the gold standard prevented it from engaging in expansionary monetary policy.^{[clarification needed]} High interest rates needed to be maintained, in order to attract international investors who bought foreign assets with gold. However, the high interest also inhibited domestic business borrowing.^{[citation needed]}

Economists dispute how much weight to give the stock market crash of October 1929. According to Milton Friedman, "the stock market in 1929 played a role in the initial depression." It clearly changed sentiment about and expectations of the future, shifting the outlook from very positive to negative, with a dampening effect on investment and entrepreneurship, but some feel that an increase in interest rates by the Federal government could have also caused the slow steps into the downturn towards the Great Depression.^[7] Thomas Sowell, on the other hand, notes that the rise in unemployment had peaked at 9% two months after the crash, and had fallen to 6.3% by June – he blames the later unemployment rate on the tariffs that Hoover passed against the advice of economists in that same month, and says that six months after their implementation unemployment rose to the double digit figures that characterized that decade.^[8]

The US interest rates were also affected by France's decision to raise their interest rates to attract gold to their vaults. In theory, the U.S. would have two potential responses to that: Allow the exchange rate to adjust, or increase their own interest rates to maintain the gold standard. At the time, the U.S. was pegged to the gold standard. Therefore Americans converted their dollars into francs to buy more French assets, the demand for the U.S. dollar fell, and the exchange rate increased. The only thing the US could do to get back into equilibrium was increase their interest rates.^{[citation needed]}

Political results of the depression[link]

File:Franklin-roosevelt.JPG Roosevelt's ebullient public personality, conveyed through his declaration that "the only thing we have to fear is fear itself" and his "fireside chats" on the radio did a great deal to help restore the nation's confidence.	Fireside Chat 1 On the Banking Crisis Roosevelt's first Fireside Chat on the Banking Crisis (March 12, 1933)
Problems listening to this file? See media help.

In the "First New Deal" of 1933-4, programs, such as the National Recovery Administration (NRA), sought to stimulate demand and provide work and relief through increased government spending. To end Deflation the Gold standard was suspended and a series of panels comprising business leaders in each industry set regulations which ended what was called "cut-throat competition," believed to be responsible for forcing down prices and profits nationwide.^[9]

The NRA, which ended in March 1935 when the Supreme Court of the United States declared it unconstitutional, had these roles:^[10]

• Setting minimum prices and wages and competitive conditions in all industries. (NRA)^[11]
• Encouraging unions that would raise wages, to increase the purchasing power of the working class by 93%. (NRA)^{[dubious – discuss]}
• Cutting farm production so as to raise prices and make it possible to earn a living in farming (done by the AAA and successor farm programs).

In 1934–36, during what the U.S. Department of State calls the "Second New Deal," Roosevelt and his party added social security; the Works Progress Administration (WPA), a national relief agency; and, through the National Labor Relations Board, a strong stimulus to the growth of labor unions. Unemployment fell by ⅔ in Roosevelt's first term (from 25% to 9%, 1933–1937), but fell continually until the war.^[12]

In 1929, federal expenditures constituted only 20% of the GDP. Between 1933 and 1939, federal expenditures tripled, but the national debt remained about level at 40% of GNP. (The debt as proportion of GNP rose under Hoover from 20% to 40%; the debt as % of GDP soared during the war years, 1941–45.) Following the Recession of 1937 and the debate on "court packing", southern Democrats joined with Republicans in a conservative coalition to stop further expansion of the New Deal. By 1943, during World War II, all of the relief programs had ended with the exception of Social Security. The labor laws were revised by conservatives in the Taft Hartley Act of 1947.

The New Deal was, and still is, widely debated.^[13][14] The Great Depression and the New Deal remain a benchmark amongst economists for evaluating severe financial downturns, such as the economic crisis of 2008.^[15]

Recession of 1937[link]

Total employment in the United States from 1920 to 1940, excluding farms and WPA.

By 1936, all the main economic indicators had regained the levels of the late 1920s, except for unemployment, which remained high. In 1937, the American economy unexpectedly fell, lasting through most of 1938. Production declined sharply, as did profits and employment. Unemployment jumped from 14.3% in 1937 to 19.0% in 1938.^[16] A contributing factor to the Recession of 1937 was a tightening of monetary policy by the Federal Reserve. The Federal Reserve doubled reserve requirements between August 1936 and May 1937^[17] leading to a contraction in the money supply.

The Roosevelt Administration reacted by launching a rhetorical campaign against monopoly power, which was cast as the cause of the depression, and appointing Thurman Arnold to break up large trusts; Arnold was not effective, and the campaign ended once World War II began and corporate energies had to be directed to winning the war.^[18] By 1939, the effects of the 1937 recession had disappeared. Employment in the private sector recovered to the level of the 1936 and continued to increase until the war came and manufacturing employment leaped from 11 million in 1940 to 18 million in 1943.^[19]

Another response to the 1937 deepening of the Great Depression had more tangible results. Ignoring the pleas of the Treasury Department, Roosevelt embarked on an antidote to the depression, reluctantly abandoning his efforts to balance the budget and launching a $5 billion spending program in the spring of 1938 in an effort to increase mass purchasing power.

Business-oriented observers explained the recession and recovery in very different terms from the Keynesian economists. They argued the New Deal had been very hostile to business expansion in 1935–37. They said it had encouraged massive strikes which had a negative impact on major industries and had threatened anti-trust attacks on big corporations. But all those threats diminished sharply after 1938. For example, the antitrust efforts fizzled out without major cases. The CIO and AFL unions started battling each other more than corporations, and tax policy became more favorable to long-term growth.^[20]

On the other hand, according to economist Robert Higgs, when looking only at the supply of consumer goods, significant GDP growth only resumed in 1946. (Higgs does not estimate the value to consumers of collective goods like victory in war)^[21] To Keynesians, the war economy showed just how large the fiscal stimulus required to end the downturn of the Depression was, and it led, at the time, to fears that as soon as America demobilized, it would return to Depression conditions and industrial output would fall to its pre-war levels. The incorrect prediction by Alvin Hansen and other Keynesians that a new depression would start after the war failed to take account of pent-up consumer demand as a result of the Depression and World War.^[22]

Afterward[link]

A factory worker in 1942. This was a common job among women at the time. Fort Worth, Texas.

The government began heavy military spending in 1940, and started drafting millions of young men that year;^[23] by 1945, 17 million had entered service to their country. But that was not enough to absorb all the unemployed. During the war, the government subsidized wages through cost-plus contracts. Government contractors were paid in full for their costs, plus a certain percentage profit margin. That meant the more wages a person was paid the higher the company profits since the government would cover them plus a percentage.^[24] Using these cost-plus contracts in 1941–1943, factories hired hundreds of thousands of unskilled workers and trained them, at government expense. The military's own training programs concentrated on teaching technical skills involving machinery, engines, electronics and radio, preparing soldiers and sailors for the post-war economy.^[25]

Structural walls were lowered dramatically during the war, especially informal policies against hiring women, minorities, and workers over 45 or under 18. (See FEPC) Strikes (except in coal mining) were sharply reduced as unions pushed their members to work harder. Tens of thousands of new factories and shipyards were built, with new bus services and nursery care for children making them more accessible. Wages soared for workers, making it quite expensive to sit at home. Employers retooled so that unskilled new workers could handle jobs that previously required skills that were now in short supply. The combination of all these factors drove unemployment below 2% in 1943.^[26]

Roosevelt's declining popularity in 1938 was evident throughout the US in the business community, the press, and the Senate and House. Many were labeling the recession the "Roosevelt Recession". In late December 1938, Roosevelt looked to gain popularity with the American people, and try to regain the nation's confidence in the economy. His decision that December to name Harry Hopkins as Secretary of Commerce was an attempt to achieve the confidence he so badly needed. The appointment came as a surprise to most because of Hopkins' lack of business experience, but proved to be vastly important in shaping the years following the recession. Hopkins made it his mission to strengthen ties between the Roosevelt administration and the business community. While Roosevelt believed in complete reform (The New Deal), Hopkins took a more administrative position;^{[clarification needed]} he felt that recovery was imperative and that The New Deal would continue to hinder recovery. With support from Secretary of Agriculture Henry Wallace and Treasury Secretary Henry Morgenthau, Jr, popular support for recovery, rather than reform, swept the nation. By the end of 1938 reform had been struck down, as no new reform laws were passed.^[27]

The economy in America was now beginning to show signs of recovery and the unemployment rate was lowering following the abysmal year of 1938. The biggest shift towards recovery, however, came with the decision of Germany to invade France at the beginning of WWII. After France had been defeated, the U.S. economy would skyrocket in the months following. France’s defeat meant that Britain and other allies would look to the U.S. for large supplies of materials for the war. The need for these materials created a huge spurt in production, thus leading to promising amount of employment in America. Moreover, Britain chose to pay for their materials in gold. This stimulated the gold inflow and raised the monetary base, which in turn, stimulated the American economy to its highest point since the summer of 1929 when the depression began.^[28]

By the end of 1941, before American entry into the war, defense spending and military mobilization had started one of the greatest booms in American history thus ending the last traces of unemployment.^[28]

Hoovervilles[link]

One visible effect of the depression was the advent of Hoovervilles. "Hooverville" was the popular name for a town of cardboard boxes built by homeless people. The term was coined by Charles Michelson, publicity chief of the Democratic National Committee, who referred sardonically to President Herbert Hoover whose policies were at the time blamed for the depression.^[29] Residents lived in shacks and begged for food or went to soup kitchens. Authorities did not officially recognize these Hoovervilles and occasionally removed the occupants for technically trespassing on private lands, but they were frequently tolerated out of necessity. Democrats popularized related terms such as "Hoover blanket" (old newspaper used as blanketing) and "Hoover flag" (an empty pocket turned inside out). "Hoover leather" was cardboard used to line a shoe with the sole worn through. A "Hoover wagon" was an automobile drawn by horse because the owner could not afford gasoline.

Facts and figures[link]

Effects of depression in the U.S.^[30]:

• 13 million people became unemployed. In 1932, 34 million people belonged to families with no regular full-time wage earner.^[31]
• Industrial production fell by nearly 45% between 1929 and 1932.
• Homebuilding dropped by 80% between the years 1929 and 1932.
• In the 1920s, the banking system in the U.S. was about $50 billion, which was about 50% of GDP.^[32]
• From 1929 to 1932, about 5,000 banks went out of business.
• By 1933, 11,000 of the US' 25,000 banks had failed.^[33]
• Between 1929 and 1933, U.S. GDP fell around 30%, the stock market lost almost 90% of its value.^[34]
• In 1929, the unemployment rate averaged 3%.^[35]
• In 1933, 25% of all workers and 37% of all nonfarm workers were unemployed.^[36]
• In Cleveland, the unemployment rate was 50%; in Toledo, Ohio, 80%.^[31]
• One Soviet trading corporation in New York averaged 350 applications a day from Americans seeking jobs in the Soviet Union.^[37]
• Over one million families lost their farms between 1930 and 1934.^[31]
• Corporate profits had dropped from $10 billion in 1929 to $1 billion in 1932.^[31]
• Between 1929 and 1932, the income of the average American family was reduced by 40%.^[38]
• Nine million savings accounts had been wiped out between 1930 and 1933.^[31]
• 273,000 families had been evicted from their homes in 1932.^[31]
• There were two million homeless people migrating around the country.^[31]
• Over 60% of Americans were categorized as poor by the federal government in 1933.^[31]
• In the last prosperous year (1929), there were 279,678 immigrants recorded, but in 1933 only 23,068 came to the U.S.^[39][40]
• In the early 1930s, more people emigrated from the United States than immigrated to it.^[41]
• With little economic activity there was scant demand for new coinage. No nickels or dimes were minted in 1932–33, no quarter dollars in 1931 or 1933, no half dollars from 1930–32, and no silver dollars in the years 1929–33.
• The U.S. government sponsored a Mexican Repatriation program which was intended to encourage people to voluntarily move to Mexico, but thousands, including some U.S. citizens, were deported against their will. Altogether about 400,000 Mexicans were repatriated.^[42]
• New York social workers reported that 25% of all schoolchildren were malnourished. In the mining counties of West Virginia, Illinois, Kentucky, and Pennsylvania, the proportion of malnourished children was perhaps as high as 90%.^[31]
• Many people became ill with diseases such as tuberculosis (TB).^[31]
• The 1930 U.S. Census determined the U.S. population to be 122,775,046. About 40% of the population was under 20 years.^[43]

See also[link]

	Book: Great Depression
Wikipedia books are collections of articles that can be downloaded or ordered in print.

• Entertainment during the Great Depression
• List of recessions in the United States
• Penny auction (foreclosure)
• The New Deal and the arts in New Mexico
• Timeline of the Great Depression
• Ham and Eggs Movement, California pension plan, 1938–40

References[link]

Further reading[link]

• Bernanke, Ben. Essays on the Great Depression (Princeton University Press, 2000) (Chapter One – "The Macroeconomics of the Great Depression" online)
• Bernanke, Ben. "Money, Gold, and the Great Depression" – Speech given March 2, 2004;
• Best, Gary Dean. Pride, Prejudice, and Politics: Roosevelt Versus Recovery, 1933–1938 (1991) ISBN 0-275-93524-8
• Best, Gary Dean. The Nickel and Dime Decade: American Popular Culture during the 1930s. (1993) online edition
• Blumberg, Barbara. The New Deal and the Unemployed: The View from New York City (1977).
• Bordo, Michael D., Claudia Goldin, and Eugene N. White , eds., The Defining Moment: The Great Depression and the American Economy in the Twentieth Century (1998). Advanced economic history.
• Bremer, William W. "Along the American Way: The New Deal's Work Relief Programs for the Unemployed." Journal of American History 62 (December 1975): 636–652 online in JSTOR
• Cantril, Hadley and Mildred Strunk, eds.; Public Opinion, 1935–1946 (1951), massive compilation of many public opinion polls online edition
• Chandler, Lester. America's Greatest Depression (1970). overview by economic historian.
• Cravens, Hamilton. Great Depression: People and Perspectives (2009), social history excerpt and text search
• Dickstein, Morris. Dancing in the Dark: A Cultural History of the Great Depression (2009) excerpt and text search
• Field, Alexander J. A Great Leap Forward: 1930s Depression and U.S. Economic Growth (Yale University Press; 2011) 387 pages; argues that technological innovations in the 1930s laid the foundation for economic success in World War II and postwar
• Friedman, Milton and Anna J. Schwartz, A Monetary History of the United States, 1867–1960 (1963) ISBN 0-691-04147-4 classic monetarist explanation; highly statistical
• Graham, John R.; Hazarika, Sonali & Narasimhan, Krishnamoorthy. "Financial Distress in the Great Depression" (2011) SSRN link to paper
• Grant, Michael Johnston. Down and Out on the Family Farm: Rural Rehabilitation in the Great Plains, 1929–1945 (2002)
• Greenberg, Cheryl Lynn. To Ask for an Equal Chance: African Americans in the Great Depression (2009) excerpt and text search
• Hapke, Laura. Daughters of the Great Depression: Women, Work, and Fiction in the American 1930s (1997)
• Higgs, Robert. Depression, War, and Cold War: Challenging the Myths of Conflict and Prosperity Oxford University Press for The Independent Institute, 2009.
• Higgs, Robert. "From Central Planning to the Market: The American Transformation, 1945–1947" Journal of Economic History, September 1999.
• Higgs, Robert. "Regime Uncertainty: Why the Great Depression Lasted So Long and Why Prosperity Resumed after the War" The Independent Review, Spring 1997.
• Higgs, Robert. "Wartime Prosperity? A Reassessment of the U.S. Economy in the 1940s" Journal of Economic History, March 1992.
• Himmelberg, Robert F. ed The Great Depression and the New Deal (2001), short overview
• Howard, Donald S. The WPA and Federal Relief Policy (1943)
• Jensen, Richard J., "The Causes and Cures of Unemployment in the Great Depression", Journal of Interdisciplinary History (1989) 19(553-83) online in JSTOR
• Kehoe, Timothy J. and Edward C. Prescott. Great Depressions of the Twentieth Century' Federal Reserve Bank of Minneapolis, 2007.
• Kennedy, David. Freedom from Fear: The American People in Depression and War, 1929–1945 (1999), wide-ranging survey by leading scholar; online edition
• Klein, Maury. Rainbow's End: The Crash of 1929 (2001) by economic historian
• Kubik, Paul J. "Federal Reserve Policy during the Great Depression: The Impact of Interwar Attitudes regarding Consumption and Consumer Credit" Journal of Economic Issues, Vol. 30, 1996
• Lowitt, Richard and Beardsley Maurice, eds. One Third of a Nation: Lorena Hickock Reports on the Great Depression (1981)
• Lynd, Robert S. and Helen M. Lynd. Middletown in Transition. 1937. sociological study of Muncie, Indiana
• McElvaine Robert S. The Great Depression 2nd ed (1993) social history
• Milkis, Sidney M. and Jerome M. Mileur. The New Deal and the Triumph of Liberalism (2002) excerpt and text search
• Miller, Dorothy Laager "New York City in the Great Depression: Sheltering the Homeless", 2009 Arcadia Publishing
• Mitchell, Broadus. Depression Decade: From New Era through New Deal, 1929–1941 (1964), overview of economic history
• Parker, Randall E., ed. Reflections on the Great Depression (2002) interviews with 11 leading economists
• Rauchway, Eric. The Great Depression and the New Deal: A Very Short Introduction (2008) excerpt and text search
• Reed, Lawrence W. Great Myths of the Great Depression. Midland, MI: Mackinac Center (1981 & 2008), libertarian interpretation
• Romasco, Albert U. "Hoover-Roosevelt and the Great Depression: A Historiographic Inquiry into a Perennial Comparison." In John Braeman, Robert H. Bremner and David Brody, eds. The New Deal: The National Level (1973) v 1 pp 3–26.
• Roose, Kenneth D. "The Recession of 1937–38" Journal of Political Economy, Vol. 56, No. 3 (Jun., 1948), pp. 239–248 in JSTOR
• Rose, Nancy. The WPA and Public Employment in the Great Depression (2009)
• Rosen, Elliot A. Roosevelt, the Great Depression, and the Economics of Recovery (2005) ISBN 0-8139-2368-9
• Rothbard, Murray N. America's Great Depression (1963), libertarian interpretation
• Saloutos, Theodore. The American Farmer and the New Deal (1982).
• Singleton, Jeff. The American Dole: Unemployment Relief and the Welfare State in the Great Depression (2000)
• Sitkoff, Harvard. A New Deal for Blacks: The Emergence of Civil Rights as a National Issue: The Depression Decade (2008)
• Sitkoff, Harvard, ed. Fifty Years Later: The New Deal Evaluated (1985), liberal perspective
• Smiley, Gene. Rethinking the Great Depression (2002) ISBN 1-56663-472-5 economist blames Federal Reserve and gold standard
• Smith, Jason Scott. Building New Deal Liberalism: The Political Economy of Public Works, 1933–1956 (2005).
• Sternsher, Bernard ed., Hitting Home: The Great Depression in Town and Country (1970), readings on local history
• Szostak, Rick. Technological Innovation and the Great Depression (1995)
• Temin, Peter. Did Monetary Forces Cause the Great Depression (1976)
• Tindall, George B. The Emergence of the New South, 1915–1945 (1967). History of entire region by leading scholar
• Trout, Charles H. Boston, the Great Depression, and the New Deal (1977)
• Uys, Errol Lincoln. Riding the Rails: Teenagers on the Move During the Great Depression (Routledge, 2003) ISBN 0-415-94575-5 author's site
• Warren, Harris Gaylord. Herbert Hoover and the Great Depression (1959).
• Watkins, T. H. The Great Depression: America in the 1930s. (2009). dexcerpt and text search
• Wecter, Dixon. The Age of the Great Depression, 1929–1941 (1948)
• Wicker, Elmus. The Banking Panics of the Great Depression 1996 online review
• White, Eugene N. "The Stock Market Boom and Crash of 1929 Revisited". The Journal of Economic Perspectives Vol. 4, No. 2 (Spring, 1990), pp. 67–83, evaluates different theories in JSTOR
• Wheeler, Mark ed. The Economics of the Great Depression (1998)
• Young, William H., and Nancy K. Young. The Great Depression in America: A Cultural Encyclopedia (2 vol. 2007)

External links[link]

• Rare Color Photos from the Great Depression – slideshow by The Huffington Post

United States of America
Flag Great Seal
Motto: In God We Trust  (official) E Pluribus Unum  (traditional) (Latin: Out of Many, One)
Anthem: "The Star-Spangled Banner"
Capital		Washington, D.C. 38°53′N 77°01′W / 38.883°N 77.017°W / 38.883; -77.017
Largest city		New York City
Official language(s)		None at federal level[a]
National language		English (de facto)[b]
Demonym		American
Government		Federal presidential constitutional republic
-	President	Barack Obama (D)
-	Vice President	Joe Biden (D)
-	Speaker of the House	John Boehner (R)
-	Chief Justice	John Roberts
Legislature		Congress
-	Upper house	Senate
-	Lower house	House of Representatives
Independence		from the Kingdom of Great Britain
-	Declared	July 4, 1776
-	Recognized	September 3, 1783
-	Current constitution	June 21, 1788
Area
-	Total	9,826,675 km2 [1][c](3rd/4th) 3,794,101 sq mi
-	Water (%)	6.76
Population
-	2012 estimate	313,802,000[2] (3rd)
-	Density	33.7/km2  87.4/sq mi
GDP (PPP)		2011 estimate
-	Total	$15.094 trillion[3] (1st)
-	Per capita	$48,386[3] (6th)
GDP (nominal)		2011 estimate
-	Total	$15.094 trillion[3] (1st)
-	Per capita	$48,386[3] (15th)
Gini (2007)		45.0[1] (39th)
HDI (2011)		0.910[4] (very high) (4th)
Currency		United States dollar ($) (USD)
Time zone		(UTC−5 to −10)
-	Summer (DST)	(UTC−4 to −10)
Date formats		m/d/yy (AD)
Drives on the		right
Internet TLD		.us .gov .mil .edu
Calling code		+1
^ a. English is the official language of at least 28 states—some sources give a higher figure, based on differing definitions of "official".[5] English and Hawaiian are both official languages in the state of Hawaii. ^ b. English is the de facto language of American government and the sole language spoken at home by 80% of Americans age five and older. Spanish is the second most commonly spoken language. ^ c. Whether the United States or China is larger is disputed. The figure given is from the U.S. Central Intelligence Agency's World Factbook. Other sources give smaller figures. All authoritative calculations of the country's size include only the 50 states and the District of Columbia, not the territories. ^ d. The population estimate includes people whose usual residence is in the fifty states and the District of Columbia, including noncitizens. It does not include either those living in the territories, amounting to more than 4 million U.S. citizens (mostly in Puerto Rico), or U.S. citizens living outside the United States.

The United States of America (commonly abbreviated to the United States, the U.S., the USA, America, and the States) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to the east and Russia to the west, across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories in the Pacific and Caribbean.

At 3.79 million square miles (9.83 million km²) and with over 312 million people, the United States is the third or fourth largest country by total area, and the third largest by both land area and population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries.^[6] The U.S. economy is the world's largest national economy, with an estimated 2011 GDP of $15.1 trillion (22% of nominal global GDP and over 19% of global GDP at purchasing-power parity).^[3][7] Per capita income is the world's sixth-highest.^[3]

Indigenous peoples descended from forebears who migrated from Asia have inhabited what is now the mainland United States for many thousands of years. This Native American population was greatly reduced by disease and warfare after European contact. The United States was founded by thirteen British colonies located along the Atlantic seaboard. On July 4, 1776, they issued the Declaration of Independence, which proclaimed their right to self-determination and their establishment of a cooperative union. The rebellious states defeated the British Empire in the American Revolution, the first successful colonial war of independence.^[8] The current United States Constitution was adopted on September 17, 1787; its ratification the following year made the states part of a single republic with a stronger central government. The Bill of Rights, comprising ten constitutional amendments guaranteeing many fundamental civil rights and freedoms, was ratified in 1791.

Through the 19th century, the United States displaced native tribes, acquired the Louisiana territory from France, Florida from Spain, part of the Oregon Country from the United Kingdom, Alta California and New Mexico from Mexico, and Alaska from Russia, and annexed the Republic of Texas and the Republic of Hawaii. Disputes between the agrarian South and industrial North over the expansion of the institution of slavery and states' rights provoked the Civil War of the 1860s. The North's victory prevented a permanent split of the country and led to the end of legal slavery in the United States. By the 1870s, its national economy was the world's largest.^[9] The Spanish–American War and World War I confirmed the country's status as a military power. It emerged from World War II as the first country with nuclear weapons and a permanent member of the United Nations Security Council. The end of the Cold War and the dissolution of the Soviet Union left the United States as the sole superpower. The country accounts for 41% of global military spending,^[10] and is a leading economic, political, and cultural force in the world.^[11]

Etymology[link]

In 1507, German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere "America" after Italian explorer and cartographer Amerigo Vespucci.^[12] The former British colonies first used the country's modern name in the 1776 Declaration of Independence, the "unanimous Declaration of the thirteen united States of America".^[13] On November 15, 1777, the Second Continental Congress adopted the Articles of Confederation, which states, "The Stile of this Confederacy shall be 'The United States of America'." The Franco-American treaties of 1778 used "United States of North America", but from July 11, 1778, "United States of America" was used on the country's bills of exchange, and it has been the official name ever since.^[14]

The short form "United States" is also standard. Other common forms include the "U.S.", the "USA", and "America". Colloquial names include the "U.S. of A." and, internationally, the "States". "Columbia", a once popular name for the United States, derives from Christopher Columbus; it appears in the name "District of Columbia".

The standard way to refer to a citizen of the United States is as an "American". Although "United States" is the official appositional term, "American" and "U.S." are more commonly used to refer to the country adjectivally ("American values", "U.S. forces"). "American" is rarely used in English to refer to people not connected to the United States.^[15]

The phrase "United States" was originally treated as plural—e.g., "the United States are"—including in the Thirteenth Amendment to the United States Constitution, ratified in 1865. It became common to treat it as singular—e.g., "the United States is"—after the end of the Civil War. The singular form is now standard; the plural form is retained in the idiom "these United States".^[16]

Geography and environment[link]

The land area of the contiguous United States is approximately 1,900 million acres (7,700,000 km²). Alaska, separated from the contiguous United States by Canada, is the largest state at 365 million acres (1,480,000 km²). Hawaii, occupying an archipelago in the central Pacific, southwest of North America, has just over 4 million acres (16,000 km²).^[17] The United States is the world's third or fourth largest nation by total area (land and water), ranking behind Russia and Canada and just above or below China. The ranking varies depending on how two territories disputed by China and India are counted and how the total size of the United States is measured: calculations range from 3,676,486 square miles (9,522,055 km²)^[18] to 3,717,813 square miles (9,629,091 km²)^[19] to 3,794,101 square miles (9,826,676 km²).^[1] Including only land area, the United States is third in size behind Russia and China, just ahead of Canada.^[20]

The Bald Eagle, national bird of the United States since 1782

The coastal plain of the Atlantic seaboard gives way further inland to deciduous forests and the rolling hills of the Piedmont. The Appalachian Mountains divide the eastern seaboard from the Great Lakes and the grasslands of the Midwest. The Mississippi–Missouri River, the world's fourth longest river system, runs mainly north–south through the heart of the country. The flat, fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast. The Rocky Mountains, at the western edge of the Great Plains, extend north to south across the country, reaching altitudes higher than 14,000 feet (4,300 m) in Colorado. Farther west are the rocky Great Basin and deserts such as the Chihuahua and Mojave. The Sierra Nevada and Cascade mountain ranges run close to the Pacific coast. At 20,320 feet (6,194 m), Alaska's Mount McKinley is the tallest peak in the country and in North America. Active volcanoes are common throughout Alaska's Alexander and Aleutian Islands, and Hawaii consists of volcanic islands. The supervolcano underlying Yellowstone National Park in the Rockies is the continent's largest volcanic feature.^[21]

The United States, with its large size and geographic variety, includes most climate types. To the east of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The southern tip of Florida is tropical, as is Hawaii. The Great Plains west of the 100th meridian are semi-arid. Much of the Western mountains are alpine. The climate is arid in the Great Basin, desert in the Southwest, Mediterranean in coastal California, and oceanic in coastal Oregon and Washington and southern Alaska. Most of Alaska is subarctic or polar. Extreme weather is not uncommon—the states bordering the Gulf of Mexico are prone to hurricanes, and most of the world's tornadoes occur within the country, mainly in the Midwest's Tornado Alley.^[22]

The U.S. ecology is considered "megadiverse": about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species of flowering plants are found in Hawaii, few of which occur on the mainland.^[23] The United States is home to more than 400 mammal, 750 bird, and 500 reptile and amphibian species.^[24] About 91,000 insect species have been described.^[25] The Endangered Species Act of 1973 protects threatened and endangered species and their habitats, which are monitored by the United States Fish and Wildlife Service. There are fifty-eight national parks and hundreds of other federally managed parks, forests, and wilderness areas.^[26] Altogether, the government owns 28.8% of the country's land area.^[27] Most of this is protected, though some is leased for oil and gas drilling, mining, logging, or cattle ranching; 2.4% is used for military purposes.^[27]

Political divisions[link]

The United States is a federal union of fifty states. The original thirteen states were the successors of the thirteen colonies that rebelled against British rule. Early in the country's history, three new states were organized on territory separated from the claims of the existing states: Kentucky from Virginia; Tennessee from North Carolina; and Maine from Massachusetts. Most of the other states have been carved from territories obtained through war or purchase by the U.S. government. One set of exceptions comprises Vermont, Texas, and Hawaii: each was an independent republic before joining the union. During the American Civil War, West Virginia broke away from Virginia. The most recent state—Hawaii—achieved statehood on August 21, 1959.^[28] The states do not have the right to secede from the union.

The states compose the vast bulk of the U.S. land mass; the two other areas considered integral parts of the country are the District of Columbia, the federal district where the capital, Washington, is located; and Palmyra Atoll, an uninhabited but incorporated territory in the Pacific Ocean. The United States also possesses five major overseas territories: Puerto Rico and the United States Virgin Islands in the Caribbean; and American Samoa, Guam, and the Northern Mariana Islands in the Pacific.^[29] Those born in the major territories (except for American Samoa) possess U.S. citizenship.^[30] American citizens residing in the territories have many of the same rights and responsibilities as citizens residing in the states; however, they are generally exempt from federal income tax, may not vote for president, and have only nonvoting representation in the U.S. Congress.^[31]

History[link]

Native American and European settlement[link]

The indigenous peoples of the U.S. mainland, including Alaska Natives, are believed to have migrated from Asia, beginning between 40,000 and 12,000 years ago.^[32] Some, such as the pre-Columbian Mississippian culture, developed advanced agriculture, grand architecture, and state-level societies. After Europeans began settling the Americas, many millions of indigenous Americans died from epidemics of imported diseases such as smallpox.^[33]

The Mayflower transported Pilgrims to the New World in 1620, as depicted in William Halsall's The Mayflower in Plymouth Harbor, 1882.

In 1492, Genoese explorer Christopher Columbus, under contract to the Spanish crown, reached several Caribbean islands, making first contact with the indigenous people. On April 2, 1513, Spanish conquistador Juan Ponce de León landed on what he called "La Florida"—the first documented European arrival on what would become the U.S. mainland. Spanish settlements in the region were followed by ones in the present-day southwestern United States that drew thousands through Mexico. French fur traders established outposts of New France around the Great Lakes; France eventually claimed much of the North American interior, down to the Gulf of Mexico. The first successful English settlements were the Virginia Colony in Jamestown in 1607 and the Pilgrims' Plymouth Colony in 1620. The 1628 chartering of the Massachusetts Bay Colony resulted in a wave of migration; by 1634, New England had been settled by some 10,000 Puritans. Between the late 1610s and the American Revolution, about 50,000 convicts were shipped to Britain's American colonies.^[34] Beginning in 1614, the Dutch settled along the lower Hudson River, including New Amsterdam on Manhattan Island.

In 1674, the Dutch ceded their American territory to England; the province of New Netherland was renamed New York. Many new immigrants, especially to the South, were indentured servants—some two-thirds of all Virginia immigrants between 1630 and 1680.^[35] By the turn of the 18th century, African slaves were becoming the primary source of bonded labor. With the 1729 division of the Carolinas and the 1732 colonization of Georgia, the thirteen British colonies that would become the United States of America were established. All had local governments with elections open to most free men, with a growing devotion to the ancient rights of Englishmen and a sense of self-government stimulating support for republicanism. All legalized the African slave trade. With high birth rates, low death rates, and steady immigration, the colonial population grew rapidly. The Christian revivalist movement of the 1730s and 1740s known as the Great Awakening fueled interest in both religion and religious liberty. In the French and Indian War, British forces seized Canada from the French, but the francophone population remained politically isolated from the southern colonies. Excluding the Native Americans (popularly known as "American Indians"), who were being displaced, those thirteen colonies had a population of 2.6 million in 1770, about one-third that of Britain; nearly one in five Americans were black slaves.^[36] Though subject to British taxation, the American colonials had no representation in the Parliament of Great Britain.

Independence and expansion[link]

Declaration of Independence, by John Trumbull, 1817–18

Tensions between American colonials and the British during the revolutionary period of the 1760s and early 1770s led to the American Revolutionary War, fought from 1775 to 1781. On June 14, 1775, the Continental Congress, convening in Philadelphia, established a Continental Army under the command of George Washington. Proclaiming that "all men are created equal" and endowed with "certain unalienable Rights", the Congress adopted the Declaration of Independence, drafted largely by Thomas Jefferson, on July 4, 1776. That date is now celebrated annually as America's Independence Day. In 1777, the Articles of Confederation established a weak confederal government that operated until 1789.

After the British defeat by American forces assisted by the French and Spanish, Great Britain recognized the independence of the United States and the states' sovereignty over American territory west to the Mississippi River. Those wishing to establish a strong federal government with powers of taxation organized a constitutional convention in 1787. The United States Constitution was ratified in 1788, and the new republic's first Senate, House of Representatives, and president—George Washington—took office in 1789. The Bill of Rights, forbidding federal restriction of personal freedoms and guaranteeing a range of legal protections, was adopted in 1791.

Attitudes toward slavery were shifting; a clause in the Constitution protected the Atlantic slave trade only until 1808. The Northern states abolished slavery between 1780 and 1804, leaving the slave states of the South as defenders of the "peculiar institution". The Second Great Awakening, beginning about 1800, made evangelicalism a force behind various social reform movements, including abolitionism.

Territorial acquisitions by date

Americans' eagerness to expand westward prompted a long series of Indian Wars. The Louisiana Purchase of French-claimed territory under President Thomas Jefferson in 1803 almost doubled the nation's size.^[37] The War of 1812, declared against Britain over various grievances and fought to a draw, strengthened U.S. nationalism. A series of U.S. military incursions into Florida led Spain to cede it and other Gulf Coast territory in 1819. The Trail of Tears in the 1830s exemplified the Indian removal policy that stripped the native peoples of their land. The United States annexed the Republic of Texas in 1845, amid a period when the concept of Manifest Destiny was becoming popular.^[38] The 1846 Oregon Treaty with Britain led to U.S. control of the present-day American Northwest. The U.S. victory in the Mexican-American War resulted in the 1848 cession of California and much of the present-day American Southwest. The California Gold Rush of 1848–49 further spurred western migration. New railways made relocation easier for settlers and increased conflicts with Native Americans. Over a half-century, up to 40 million American bison, or buffalo, were slaughtered for skins and meat and to ease the railways' spread. The loss of the buffalo, a primary resource for the plains Indians, was an existential blow to many native cultures.

Civil War and industrialization[link]

Battle of Gettysburg, lithograph by Currier & Ives, ca. 1863

Tensions between slave and free states mounted with arguments about the relationship between the state and federal governments, as well as violent conflicts over the spread of slavery into new states. Abraham Lincoln, candidate of the largely antislavery Republican Party, was elected president in 1860. Before he took office, seven slave states declared their secession—which the federal government maintained was illegal—and formed the Confederate States of America. With the Confederate attack upon Fort Sumter, the Civil War began and four more slave states joined the Confederacy. Lincoln's Emancipation Proclamation in 1863 declared slaves in the Confederacy to be free. Following the Union victory in 1865, three amendments to the U.S. Constitution ensured freedom for the nearly four million African Americans who had been slaves,^[39] made them citizens, and gave them voting rights. The war and its resolution led to a substantial increase in federal power.^[40] The war remains the deadliest conflict in American history, resulting in the deaths of 620,000 soldiers.^[41]

Immigrants at Ellis Island, New York Harbor, 1902

After the war, the assassination of Abraham Lincoln radicalized Republican Reconstruction policies aimed at reintegrating and rebuilding the Southern states while ensuring the rights of the newly freed slaves. The resolution of the disputed 1876 presidential election by the Compromise of 1877 ended Reconstruction; Jim Crow laws soon disenfranchised many African Americans. In the North, urbanization and an unprecedented influx of immigrants from Southern and Eastern Europe hastened the country's industrialization. The wave of immigration, lasting until 1929, provided labor and transformed American culture. National infrastructure development spurred economic growth. The 1867 Alaska Purchase from Russia completed the country's mainland expansion. The Wounded Knee Massacre in 1890 was the last major armed conflict of the Indian Wars. In 1893, the indigenous monarchy of the Pacific Kingdom of Hawaii was overthrown in a coup led by American residents; the United States annexed the archipelago in 1898. Victory in the Spanish–American War the same year demonstrated that the United States was a world power and led to the annexation of Puerto Rico, Guam, and the Philippines.^[42] The Philippines gained independence a half-century later; Puerto Rico and Guam remain U.S. territories.

World War I, Great Depression, and World War II[link]

An abandoned farm in South Dakota during the Dust Bowl, 1936

At the outbreak of World War I in 1914, the United States remained neutral. Most Americans sympathized with the British and French, although many opposed intervention.^[43] In 1917, the United States joined the Allies, and the American Expeditionary Forces helped to turn the tide against the Central Powers. After the war, the Senate did not ratify the Treaty of Versailles, which established the League of Nations. The country pursued a policy of unilateralism, verging on isolationism.^[44] In 1920, the women's rights movement won passage of a constitutional amendment granting women's suffrage. The prosperity of the Roaring Twenties ended with the Wall Street Crash of 1929 that triggered the Great Depression. After his election as president in 1932, Franklin D. Roosevelt responded with the New Deal, a range of policies increasing government intervention in the economy, including the establishment of the Social Security system.^[45] The Dust Bowl of the mid-1930s impoverished many farming communities and spurred a new wave of western migration.

Soldiers of the U.S. Army 1st Infantry Division landing in Normandy on D-Day, June 6, 1944

The United States, effectively neutral during World War II's early stages after Nazi Germany's invasion of Poland in September 1939, began supplying materiel to the Allies in March 1941 through the Lend-Lease program. On December 7, 1941, the Empire of Japan launched a surprise attack on Pearl Harbor, prompting the United States to join the Allies against the Axis powers as well as the internment of Japanese Americans by the thousands.^[46] Participation in the war spurred capital investment and industrial capacity. Among the major combatants, the United States was the only nation to become richer—indeed, far richer—instead of poorer because of the war.^[47] Allied conferences at Bretton Woods and Yalta outlined a new system of international organizations that placed the United States and Soviet Union at the center of world affairs. As victory was won in Europe, a 1945 international conference held in San Francisco produced the United Nations Charter, which became active after the war.^[48] The United States, having developed the first nuclear weapons, used them on the Japanese cities of Hiroshima and Nagasaki in August. Japan surrendered on September 2, ending the war.^[49]

Cold War and protest politics[link]

Martin Luther King, Jr. delivering his "I Have a Dream" speech, 1963

The United States and the Soviet Union jockeyed for power after World War II during the Cold War, dominating the military affairs of Europe through NATO and the Warsaw Pact, respectively. While they engaged in proxy wars and developed powerful nuclear arsenals, the two countries avoided direct military conflict. Resisting leftist land and income redistribution projects around the world, the United States often supported authoritarian governments. American troops fought Communist Chinese forces in the Korean War of 1950–53. The House Un-American Activities Committee pursued a series of investigations into suspected leftist subversion, while Senator Joseph McCarthy became the figurehead of anticommunist sentiment.

The 1961 Soviet launch of the first manned spaceflight prompted President John F. Kennedy's call for the United States to be first to land "a man on the moon", achieved in 1969. Kennedy also faced a tense nuclear showdown with Soviet forces in Cuba. Meanwhile, the United States experienced sustained economic expansion. A growing civil rights movement, symbolized and led by African Americans such as Rosa Parks and Martin Luther King, Jr., used nonviolence to confront segregation and discrimination. Following Kennedy's assassination in 1963, the Civil Rights Act of 1964 and Voting Rights Act of 1965 were passed under President Lyndon B. Johnson.^[50][51] He also signed into law the Medicare and Medicaid programs.^[52] Johnson and his successor, Richard Nixon, expanded a proxy war in Southeast Asia into the unsuccessful Vietnam War. A widespread countercultural movement grew, fueled by opposition to the war, black nationalism, and the sexual revolution. Betty Friedan, Gloria Steinem, and others led a new wave of feminism that sought political, social, and economic equality for women.

As a result of the Watergate scandal, in 1974 Nixon became the first U.S. president to resign, to avoid being impeached on charges including obstruction of justice and abuse of power. The Jimmy Carter administration of the late 1970s was marked by stagflation and the Iran hostage crisis. The election of Ronald Reagan as president in 1980 heralded a rightward shift in American politics, reflected in major changes in taxation and spending priorities. His second term in office brought both the Iran-Contra scandal and significant diplomatic progress with the Soviet Union. The subsequent Soviet collapse ended the Cold War.

Contemporary era[link]

The World Trade Center on the morning of September 11, 2001

Under President George H. W. Bush, the United States took a lead role in the UN–sanctioned Gulf War. The longest economic expansion in modern U.S. history—from March 1991 to March 2001—encompassed the Bill Clinton administration and the dot-com bubble.^[53] A civil lawsuit and sex scandal led to Clinton's impeachment in 1998, but he remained in office. The 2000 presidential election, one of the closest in American history, was resolved by a U.S. Supreme Court decision—George W. Bush, son of George H. W. Bush, became president.

On September 11, 2001, al-Qaeda terrorists struck the World Trade Center in New York City and The Pentagon near Washington, D.C., killing nearly three thousand people. In response, the Bush administration launched the global War on Terror, invading Afghanistan and removing the Taliban government and al-Qaeda training camps. Taliban insurgents continue to fight a guerrilla war. In 2002, the Bush administration began to press for regime change in Iraq on controversial grounds.^[54] Forces led by the U.S. invaded Iraq in 2003, ousting Saddam Hussein. In 2005, Hurricane Katrina caused severe destruction along much of the Gulf Coast, devastating New Orleans. In 2008, amid a global economic recession, the first African American president, Barack Obama, was elected. Major health care and financial system reforms were enacted two years later. In 2011, a raid by Navy SEALs in Pakistan killed al-Qaeda leader Osama bin Laden. The Iraq War ended with the pullout of the remaining U.S. troops from the country.

Government and politics[link]

The west front of the United States Capitol, which houses the U.S. Congress

The United States is the world's oldest surviving federation. It is a constitutional republic and representative democracy, "in which majority rule is tempered by minority rights protected by law".^[55] The government is regulated by a system of checks and balances defined by the U.S. Constitution, which serves as the country's supreme legal document.^[56] In the American federalist system, citizens are usually subject to three levels of government, federal, state, and local; the local government's duties are commonly split between county and municipal governments. In almost all cases, executive and legislative officials are elected by a plurality vote of citizens by district. There is no proportional representation at the federal level, and it is very rare at lower levels.

The south façade of the White House, home and workplace of the U.S. president

The federal government is composed of three branches:

• Legislative: The bicameral Congress, made up of the Senate and the House of Representatives, makes federal law, declares war, approves treaties, has the power of the purse, and has the power of impeachment, by which it can remove sitting members of the government.
• Executive: The president is the commander-in-chief of the military, can veto legislative bills before they become law, and appoints the members of the Cabinet (subject to Senate approval) and other officers, who administer and enforce federal laws and policies.
• Judicial: The Supreme Court and lower federal courts, whose judges are appointed by the president with Senate approval, interpret laws and overturn those they find unconstitutional.

The west front of the United States Supreme Court Building

The House of Representatives has 435 voting members, each representing a congressional district for a two-year term. House seats are apportioned among the states by population every tenth year. As of the 2000 census, seven states have the minimum of one representative, while California, the most populous state, has fifty-three. The Senate has 100 members with each state having two senators, elected at-large to six-year terms; one third of Senate seats are up for election every other year. The president serves a four-year term and may be elected to the office no more than twice. The president is not elected by direct vote, but by an indirect electoral college system in which the determining votes are apportioned to the states and the District of Columbia. The Supreme Court, led by the Chief Justice of the United States, has nine members, who serve for life.

The state governments are structured in roughly similar fashion; Nebraska uniquely has a unicameral legislature. The governor (chief executive) of each state is directly elected. Some state judges and cabinet officers are appointed by the governors of the respective states, while others are elected by popular vote.

The original text of the Constitution establishes the structure and responsibilities of the federal government and its relationship with the individual states. Article One protects the right to the "great writ" of habeas corpus, and Article Three guarantees the right to a jury trial in all criminal cases. Amendments to the Constitution require the approval of three-fourths of the states. The Constitution has been amended twenty-seven times; the first ten amendments, which make up the Bill of Rights, and the Fourteenth Amendment form the central basis of Americans' individual rights. All laws and governmental procedures are subject to judicial review and any law ruled in violation of the Constitution is voided. The principle of judicial review, not explicitly mentioned in the Constitution, was declared by the Supreme Court in Marbury v. Madison (1803).

Parties and ideology[link]

Barack Obama taking the presidential oath of office from U.S. Chief Justice John Roberts, January 20, 2009

The United States has operated under a two-party system for most of its history.^[57] For elective offices at most levels, state-administered primary elections choose the major party nominees for subsequent general elections. Since the general election of 1856, the major parties have been the Democratic Party, founded in 1824, and the Republican Party, founded in 1854. Since the Civil War, only one third-party presidential candidate—former president Theodore Roosevelt, running as a Progressive in 1912—has won as much as 20% of the popular vote.

Within American political culture, the Republican Party is considered center-right or conservative and the Democratic Party is considered center-left or liberal. The states of the Northeast and West Coast and some of the Great Lakes states, known as "blue states", are relatively liberal. The "red states" of the South and parts of the Great Plains and Rocky Mountains are relatively conservative.

The winner of the 2008 presidential election, Democrat Barack Obama, is the 44th U.S. president. The 2010 midterm elections saw the Republican Party take control of the House and make gains in the Senate, where the Democrats retain the majority. In the 112th United States Congress, the Senate comprises 51 Democrats, two independents who caucus with the Democrats, and 47 Republicans; the House comprises 242 Republicans and 192 Democrats—one seat is vacant. There are 29 Republican and 20 Democratic state governors, as well as one independent.

Foreign relations and military[link]

British Foreign Secretary William Hague and U.S. Secretary of State Hillary Clinton, May 2010

The United States exercises global economic, political, and military influence. It is a permanent member of the United Nations Security Council and New York City hosts the United Nations Headquarters. It is a member of the G8,^[58] G20, and Organisation for Economic Co-operation and Development. Almost all countries have embassies in Washington, D.C., and many have consulates around the country. Likewise, nearly all nations host American diplomatic missions. However, Cuba, Iran, North Korea, Bhutan, and the Republic of China (Taiwan) do not have formal diplomatic relations with the United States.

The United States has a "special relationship" with the United Kingdom^[59] and strong ties with Canada,^[60] Australia,^[61] New Zealand,^[62] the Philippines,^[63] Japan,^[64] South Korea,^[65] Israel,^[66] and several European countries. It works closely with fellow NATO members on military and security issues and with its neighbors through the Organization of American States and free trade agreements such as the trilateral North American Free Trade Agreement with Canada and Mexico. In 2008, the United States spent a net $25.4 billion on official development assistance, the most in the world. As a share of America's large gross national income (GNI), however, the U.S. contribution of 0.18% ranked last among twenty-two donor states. By contrast, private overseas giving by Americans is relatively generous.^[67]

The USS Abraham Lincoln aircraft carrier

The president holds the title of commander-in-chief of the nation's armed forces and appoints its leaders, the secretary of defense and the Joint Chiefs of Staff. The United States Department of Defense administers the armed forces, including the Army, Navy, Marine Corps, and Air Force. The Coast Guard is run by the Department of Homeland Security in peacetime and the Department of the Navy in time of war. In 2008, the armed forces had 1.4 million personnel on active duty. The Reserves and National Guard brought the total number of troops to 2.3 million. The Department of Defense also employed about 700,000 civilians, not including contractors.^[68]

Military service is voluntary, though conscription may occur in wartime through the Selective Service System.^[69] American forces can be rapidly deployed by the Air Force's large fleet of transport aircraft, the Navy's eleven active aircraft carriers, and Marine Expeditionary Units at sea with the Navy's Atlantic and Pacific fleets. The military operates 865 bases and facilities abroad,^[70] and maintains deployments greater than 100 active duty personnel in 25 foreign countries.^[71] The extent of this global military presence has prompted some scholars to describe the United States as maintaining an "empire of bases".^[72]

Total U.S. military spending in 2010, almost $700 billion, was 43% of global military spending and greater than the next fourteen largest national military expenditures combined. At 4.8% of GDP, the rate was the second-highest among the top fifteen military spenders, after Saudi Arabia.^[73] The proposed base Department of Defense budget for 2012, $553 billion, is a 4.2% increase over 2011; an additional $118 billion is proposed for the military campaigns in Iraq and Afghanistan.^[74] The last American troops serving in Iraq departed in December 2011;^[75] 4,484 servicemen were killed during the Iraq War.^[76] Approximately 90,000 U.S. troops were serving in Afghanistan as of April 2012;^[77] as of April 4, 1,924 had been killed during the War in Afghanistan.^[78]