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USA Today is a national American daily newspaper published by the Gannett Company. It was founded by Al Neuharth in 1982.^[2] The newspaper vies with The Wall Street Journal (WSJ) for the position of having the widest circulation of any newspaper in the United States, something it previously held since 2003.^{[citation needed]} According to the Audit Bureau of Circulations, the paper has 1.8 million copies as of March 2012^[1] compared with The Wall Street Journal's 2.1 million^[1] though this figure includes the WSJ's 400,000 paid-for, online subscribers.^{[citation needed]} USA Today remains the widest circulated print newspaper in the United States.^{[citation needed]} USA Today is distributed in all fifty states, the District of Columbia, Puerto Rico, Guam, Canada and the United Kingdom.^{[citation needed]} The newspaper has its headquarters in the Tysons Corner area of Fairfax County, Virginia.^[3] Currently,^[when?] USA Today sells for US$1.00 in newsstands; however, it is often found free at hotels and airports that distribute it to their customers.^{[citation needed]}

Layout and format[link]

USA Today is known for synthesizing news down to easy-to-read-and-comprehend stories. In the main edition seen in the United States and some Canadian cities, each edition consists of four sections: News (the oft-labeled "front page" section), Money, Sports, and Life. On Fridays, two Life sections are included: the regular Life for entertainment (subtitled Weekend; section E), which features television, a DVD column, film reviews and trends, and a travel supplement called Destinations & Diversions (section D). The international edition of the paper features two sections: News and Money in one; with Sports and Life in the other.

The paper does not print on Saturdays and Sundays. USA Today prints each complete story on the front page of the respective section with the exception of the cover story. The cover story is a longer story that requires a jump (readers must turn to another page in the paper to complete the story, usually the next page of that section). On certain days, the news or sports section will take up two paper sections, and there will be a second cover story within the second section.

Each section is denoted by a certain color to differentiate sections beyond lettering and is seen in a box the top-left corner of the first page, with News being blue (section A), Money with green (section B), red for Sports (section C), and purple for Life (section D). Orange is used for bonus sections (section E or above), which are published occasionally such as for business travel trends and the Olympics; other bonus sections for sports (such as for the PGA Tour preview, NCAA Basketball Tournaments, Memorial Day auto races (Indianapolis 500 and Coca-Cola 600), NFL opening weekend and the Super Bowl) previously used the orange color, but now use the sports red in their bonus sections. On days featuring bonus sections or business holidays (when the four pages of stock tables are unneeded), the Money and Life sections are usually combined into one section, while combinations of the Friday Life editions into one section are common during quiet weeks.

In many ways, USA Today is set up to break the typical newspaper layout. Some examples of that divergence from tradition include using the left-hand quarter of each section as reefers, sometimes using sentence-length blurbs to describe stories inside. It is also the only paper in the United States to utilize the Gulliver font, which is used for both headlines and stories.^[4] Being a national newspaper, USA Today cannot focus on the weather for any one city. Therefore, the entire back page of the News section is used for weather maps and temperature lists for the entire United States and many cities throughout the world, with data provided by Weather Channel meteorologists. In the bottom left-hand corner of the weather page is a graphic called "Weather Focus," which explains different meteorological phenomena. On some days, the Weather Focus could be a photo of a rare meteorological event. On Mondays, the Money section uses its back page to present an unusual graphic depicting the performance of various industry groups as a function of quarterly, monthly and weekly movements against the S&P 500.

Book coverage, including reviews and a national sales chart is seen on Thursdays in Life, with the official full A.C. Nielsen television ratings chart printed on Wednesdays or Thursdays, depending on release. The paper also publishes the Mediabase survey for several genres of music, based on radio airplay spins on Tuesdays, along with their own chart of the top ten singles in general on Wednesdays. Advertising coverage is seen in the Monday Money section, which often includes a review of a current television ad, and after Super Bowl Sunday, a review of the ads aired during the broadcast with the results of the Ad Track live survey.

USA Today is headquartered in Tysons Corner, Virginia.

One of the staples of the News section is a state-by-state roundup of headlines. The summaries consist of paragraph-length Associated Press reports highlighting one story of note in each state, the District of Columbia, and one U.S. territory.

Some traditions have been retained, however. The lead story still appears on the upper-right hand of the front page. Commentary and political cartoons occupy the last few pages of the News section. Stock and mutual fund data are presented in the Money section. But USA Today is sufficiently different in aesthetics to be recognized on sight, even in a mix of other newspapers, such as at a newsstand. The overall design and layout of USA Today has been described as both neo-Victorian^[5] and Impressionist.^[6]

Also, in most of the sections' front pages, on the lower left hand corner, are "USA Today Snapshots", which give statistics of various lifestyle interests according to the section it is in (for example, a snapshot in "Life" could show how many people tend to watch a certain genre of television show based upon the type of mood they are in at the time). These "Snapshots" are shown through graphs which are made up of various illustrations of objects that roughly pertain to the graphs subject matter (using the example above, the graph's bars could be made up of several TV sets, or ended by one). These are usually loosely based on research by a national institute (with the source in the box below the graph in fine print to show credit).

Starting in February 2008, the newspaper added a magazine supplement called Open Air, appearing several times a year.^{[citation needed]}

2011 Tweaks[link]

On January 24, 2011, to reverse a slide of revenue, the paper introduced a tweaked format, changing a few looks of the front pages of sections.^[7]

Some of the changes include:

• A larger logo at the top.
• A new sans-serif font, called Prelo, for certain headlines of main stories.
• Increasing and decreasing of mastheads and white space in order to present a cleaner style.

Opinion Section[link]

The opinion section prints USA Today editorials, columns by guest writers and members of the Board of Contributors,^[8] letters to the editor, and editorial cartoons. One unique feature of the USA Today editorial page is the publication of opposing points of view alongside the editorial board's piece on the day's topic runs an opposing view by a guest writer, often an expert in the field.^[9]

The current^[when?] Editorial Page Editor is Brian Gallagher, who has worked for the newspaper since its founding in 1982. Other members of the Editorial Board include deputy editorial page editor Bill Sternberg, executive Forum editor John Siniff, op-ed/Forum page editor Glen Nishimura, operations editor Thuan Le Elston, letters editor Michelle Poblete, web content editor Eileen Rivers, and editorial writers Dan Carney, George Hager, and Saundra Torry.^[10] The newspaper's website calls this group "demographically and ideologically diverse."^[9]

Newsroom restructuring[link]

On August 27, 2010, USA Today announced that they would be reorganizing their newsroom. 130 people are to be laid off, a new publication called USA Today Sports will be created, and the paper will be shifting its focus away from print and more on digital platforms like USA Today.com and their mobile phone applications (apps).

Online commenting on articles[link]

USA Today requires a membership in Facebook in order to leave comments on news stories.^[11] People who are not members of Facebook can no longer comment on articles.

Controversial incidents[link]

Arthur Ashe[link]

This unreferenced section requires citations to ensure verifiability.

In 1988, Arthur Ashe discovered he had contracted HIV during blood transfusions he received during one of his two heart surgeries. He and his wife kept his illness private until April 8, 1992, when reports that the newspaper USA Today was about to publish a story about his condition forced him to make a public announcement that he had the disease.

Jack Kelley[link]

This unreferenced section requires citations to ensure verifiability.

In March 2004, the newspaper was hit by a major scandal when it was revealed that Jack Kelley, a long-time USA Today correspondent and nominee for the Pulitzer Prize, had been fabricating stories. The newspaper did an extensive review of Kelley's stories, including sending investigators to Cuba, Israel and Jordan, and sifting through stacks of hotel records to determine if Kelley was in the locations he claimed to be filing stories from. Kelley resigned, but denied the charges. The paper's publisher, Craig Moon, issued a public apology on the front page of the newspaper. Many remarked on the similarity of this scandal to that of the Jayson Blair situation at The New York Times, although it received less national attention.

NSA Database[link]

This section may stray from the topic of the article into the topic of another article, NSA. Please help improve this section or discuss this issue on the talk page. (April 2012)

In May 2006, USA Today reported that the National Security Agency had been working with AT&T, Verizon, and BellSouth to compile "the largest database in the world," according to the anonymous sources inside the agency that went public.^[12] This allowed the paper to uncover a new facet of the agency and further upset the White House after the New York Times revealed the Bush administration authorized the NSA to wiretap international phone calls and e-mails traveling within the U.S.^[13]

Both stories challenged the administration's ability to spy on alleged terrorists without a judge's approval, a provision of the Foreign Intelligence Surveillance Act established in 1978. But unlike the Times' story, the USA Today story provoked private telecommunications companies to enter the debate amid the initial developments for the next Telecommunications Act, popularly nicknamed the "net neutrality" or "equal internet access" bill.

On June 29, 2006, a press release for AT&T stated, "The U.S. Department of Justice has stated that AT&T may neither confirm nor deny AT&T's participation in the alleged NSA program because doing so would cause 'exceptionally grave harm to national security' and would violate both civil and criminal statutes."^[14] BellSouth, which announced its merger with AT&T on March 5,^[15] denies releasing any records to the NSA ^[16] and requested the newspaper retract claims in its story asserting BellSouth "provided phone records of its customers to NSA."^[17] "Both BellSouth and Verizon Communications Inc., another company cited in the story, denied this week that they provided the calling records," according to the AP.^[18] On June 30, USA Today published a statement: "The denial was unexpected. The newspaper had spoken with BellSouth and Verizon for several weeks about the substance of the report."^[19]

On August 17, 2006, U.S. District Judge Anna Diggs Taylor in Detroit issued a 43-page ruling stating the program is unconstitutional,^[20] but did not immediately suspend the program and grants a temporary stay, in which the American Civil Liberties Union continued fighting the program's legality in the case ACLU v. NSA.

Taylor's ruling states the program violates the FISA court standards, which provide oversight for all wire taps. The FISA court provides retroactive review of all government wiretaps and allows all government agencies 72 hours before presenting their case for wiretapping before the court. "There are no hereditary kings in America and no such powers created by the constitution," Taylor writes.

In a USA Today editorial, the staff wrote, "Much has changed since terrorists rammed planes into the World Trade Center and the Pentagon. But one thing that has not is that America is a constitutional democracy with checks and balances. A ruling such as Thursday's is a useful and forceful affirmation of that."^[21]

The White House issued a statement saying that it disagreed with the decision and declared that the program was legal.^[22]

Finally in 2007, the Taylor ruling was reversed for lack of evidence by the Supreme Court, which said that the ACLU had no evidence that its own communications had been intercepted without a warrant, and therefore the ACLU did not have a basis to challenge the legality of the wiretaps. The majority decision denied that the ACLU had the standing to bring the case to court. The Supreme Court declined to rule on the legality of the wiretap program.

TV show[link]

This unreferenced section requires citations to ensure verifiability.

In the fall of 1988, an attempt was made to bring the breezy style of USA Today to television. The result was the syndicated series USA Today: The Television Show (later re-titled USA Today on TV, then simply USA Today), which was a joint venture between Gannett and producer Grant Tinker. Correspondents on the series included Edie Magnus, Robin Young, Boyd Matson, Kenneth Walker, Dale Harimoto, Ann Abernathy, Bill Macatee, and Beth Ruyak. As with the newspaper itself, the show was divided into four "sections" corresponding to the different parts of the paper – News, Money, Sports, and Life. The series was canceled after one and a half seasons in January 1990 due to low ratings.

Awards[link]

• List of USA Today major-league baseball awards
• USA Today Minor League Player of the Year Award
• USA Today All-USA high school baseball team (including High School Baseball Player of the Year and High School Baseball Coach of the Year)
• USA Today All-USA high school basketball team
• USA Today All-Joe Team (NFL)
• USA Today/National Prep Poll High School Football National Championship
• USA Today All-USA high school football team (including Super 25 teams in U.S. and Top 10 teams in East, South, Midwest, and West regions)
• USA Today All-USA high school football team (including Offensive and Defensive high school players of the year)
• USA Today High School Football Coach of the Year

Parodies[link]

Parodies of USA Today have appeared in various films and TV shows over the years, such as:

• The Harvard Lampoon published a parody issue of USA Today in 1986.
• A futuristic 2015 edition of USA Today (Hill Valley edition) is seen in Back to the Future Part II (1989)
• A spinoff red planet version entitled Mars Today seen in Total Recall (1990)
• An animated, dynamically updating e-paper version seen in Minority Report (2002)
• A paper called BSA Today in an alternate reality where North America is still governed by the United Kingdom as the British States of America, seen in Sliders (1995)
• Universe Today appeared in Babylon 5. The newspaper is custom-printed at a booth, where each customer can choose certain sections to include or exclude. It included at least an "Eye on Minbari" section.
• An extended sequence of Doonesbury strips in the 1980s mocked the paper.
• In The Simpsons episode Homer Defined, Homer reads a newspaper called USofA Today with the cover story: "America's Favorite Pencil - #2 is #1." Homer reads aloud another headline: "SAT scores are declining at a slower rate." After Lisa criticizes it, Homer says "this is the only newspaper in the country that is not afraid to tell the truth: that everything is just fine".
• The comedy publication The Onion publishes a feature on its front page called "Statshot," patterned after similar statistics published on the front page of USA Today.
• The 1988 computer game Hidden Agenda featured excerpts from a newspaper called 'USA Yesterday' in press digests.
• The alternate history movie C.S.A.: The Confederate States of America (2004) features a newspaper called CSA Today.
• Country musician Alan Jackson has a song Entitled "USA Today" in which the paper thinks about doing a story of the loneliest man in the "USA Today". The Song is on his What I Do CD released in 2004.
• Comedian Stephen Colbert frequently refers to it as "Today's The USA Today". He sarcastically criticizes the newspaper for its abundant use of colors and flashy, uninformative infographics.

See also[link]

	Virginia portal
	Journalism portal

• USA Today Super Bowl Ad Meter

Notes[link]

External links[link]

• Official website (Mobile)
• USA Today articles indexed by reporter
• Nieman Journalism Lab. "USA Today". Encyclo: an Encyclopedia of the Future of News. http://www.niemanlab.org/encyclo/usa-today/. Retrieved 1 April 2012. 

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]

Economy[link]

The United States has a capitalist mixed economy, which is fueled by abundant natural resources, a well-developed infrastructure, and high productivity.^[85] According to the International Monetary Fund, the U.S. GDP of $15.1 trillion constitutes 22% of the gross world product at market exchange rates and over 19% of the gross world product at purchasing power parity (PPP).^[3] Though larger than any other nation's, its national GDP is about 5% smaller than the GDP of the European Union at PPP in 2008. The country ranks ninth in the world in nominal GDP per capita and sixth in GDP per capita at PPP.^[3] The U.S. dollar is the world's primary reserve currency.^[86]

The United States is the largest importer of goods and third largest exporter, though exports per capita are relatively low. In 2010, the total U.S. trade deficit was $635 billion.^[87] Canada, China, Mexico, Japan, and Germany are its top trading partners.^[88] In 2010, oil was the largest import commodity, while transportation equipment was the country's largest export.^[87] China is the largest foreign holder of U.S. public debt.^[89]

Wall Street and the New York Stock Exchange, the world's largest bourse by dollar volume^[90]

In 2009, the private sector was estimated to constitute 86.4% of the economy, with federal government activity accounting for 4.3% and state and local government activity (including federal transfers) the remaining 9.3%.^[91] While its economy has reached a postindustrial level of development and its service sector constitutes 67.8% of GDP, the United States remains an industrial power.^[92] The leading business field by gross business receipts is wholesale and retail trade; by net income it is manufacturing.^[93] Chemical products are the leading manufacturing field.^[94] The United States is the third largest producer of oil in the world, as well as its largest importer.^[95] It is the world's number one producer of electrical and nuclear energy, as well as liquid natural gas, sulfur, phosphates, and salt. While agriculture accounts for just under 1% of GDP,^[92] the United States is the world's top producer of corn^[96] and soybeans.^[97] Coca-Cola and McDonald's are the two most recognized brands in the world.^[98]

In August 2010, the American labor force comprised 154.1 million people. With 21.2 million people, government is the leading field of employment. The largest private employment sector is health care and social assistance, with 16.4 million people. About 12% of workers are unionized, compared to 30% in Western Europe.^[99] The World Bank ranks the United States first in the ease of hiring and firing workers.^[100] In 2009, the United States had the third highest labor productivity per person in the world, behind Luxembourg and Norway. It was fourth in productivity per hour, behind those two countries and the Netherlands.^[101] Compared to Europe, U.S. property and corporate income tax rates are generally higher, while labor and, particularly, consumption tax rates are lower.^[102]

Income and human development[link]

According to the United States Census Bureau, the pretax median household income in 2010 was $49,445. The median ranged from $64,308 among Asian American households to $32,068 among African American households.^[82] Using purchasing power parity exchange rates, the overall median is similar to the most affluent cluster of developed nations. After declining sharply during the middle of the 20th century, poverty rates have plateaued since the early 1970s, with 11–15% of Americans below the poverty line every year, and 58.5% spending at least one year in poverty between the ages of 25 and 75.^[103][104] In 2010, 46.2 million Americans lived in poverty, a figure that rose for the fourth year in a row.^[82]

A middle-class suburban development in San Jose, California, part of the San Francisco Bay Area.

The U.S. welfare state is one of the least extensive in the developed world, reducing both relative poverty and absolute poverty by considerably less than the mean for rich nations,^[105][106] though combined private and public social expenditures per capita are relatively high.^[107] While the American welfare state effectively reduces poverty among the elderly,^[108] it provides relatively little assistance to the young.^[109] A 2007 UNICEF study of children's well-being in twenty-one industrialized nations ranked the United States next to last.^[110]

Between 1947 and 1979, real median income rose by over 80% for all classes, with the incomes of poor Americans rising faster than those of the rich.^[111] However, income gains since then have been slower, less widely shared, and accompanied by increased economic insecurity.^[111][112] Median household income has increased for all classes since 1980,^[113] largely owing to more dual-earner households, the closing of the gender pay gap, and longer work hours, but the growth has been strongly tilted toward the very top.^{[105][111][114]} Consequently, the share of income of the top 1%—21.8% of total reported income in 2005—has more than doubled since 1980,^[115] leaving the United States with the greatest income inequality among developed nations.^[105][116] The United States has a progressive tax system which equates to higher income earners paying a larger percentage of their income in taxes.^[117] The top 1% pays 27.6% of all federal taxes, while the top 10% pays 54.7%.^[118] Wealth, like income and taxes, is highly concentrated: The richest 10% of the adult population possesses 69.8% of the country's household wealth, the second-highest share among developed nations.^[119] The top 1% possesses 33.4% of net wealth.^[120] In 2011 the United Nations Development Programme ranked the United States 23rd among 139 countries on its inequality-adjusted human development index (IHDI), nineteen places lower than in the standard HDI.^[121]

Infrastructure[link]

Science and technology[link]

A photograph from Apollo 11 of Buzz Aldrin on the surface of the Moon

The United States has been a leader in scientific research and technological innovation since the late 19th century. In 1876, Alexander Graham Bell was awarded the first U.S. patent for the telephone. Thomas Edison's laboratory developed the phonograph, the first long-lasting light bulb, and the first viable movie camera. Nikola Tesla pioneered alternating current, the AC motor, and radio. In the early 20th century, the automobile companies of Ransom E. Olds and Henry Ford popularized the assembly line. The Wright brothers, in 1903, made the first sustained and controlled heavier-than-air powered flight.^[122]