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Map of the three Amtrak California routes - the Capitol Corridor (red), Pacific Surfliner (green) and San Joaquin (blue) - and other Amtrak routes in California (black)

An Amtrak California train at San Jose Diridon Station

An Amtrak California Express Thruway Motorcoach in Sacramento

Amtrak California (reporting mark CDTX) is a brand name used by the Caltrans Division of Rail for all state-supported Amtrak rail routes within the U.S. State of California. It also includes an extensive network of Thruway Motorcoach bus connections, operated by private companies under contract.

History[link]

By 1976, the once expansive rail network throughout California (as in the rest of the United States) had declined to a point where rail travel in California was basic and infrequent. As a result, the National Railroad Passenger Corporation (Amtrak) was founded in 1971 to take over America's passenger rail system. In order to relieve California's traffic congestion on state highways and to expand rail service above a basic level, California began to provide financial assistance to Amtrak.^[1] At the same time, Caltrans Division of Rail was formed to oversee state-financed rail operations and the brand Amtrak California started appearing on state-supported routes.

In 1990, California passed Propositions 108 and 116, providing $3 billion for transportation projects, with a large portion going to rail service.^[2] As a result, new locomotives and passenger cars were purchased by the state, existing inter-city routes expanded, and one new inter-city route, the Capitol Corridor, began operation. A more distinct image for Amtrak California, such as painting locomotives and passenger cars in "California Color", was established with the arrival of new rolling stock.

Rolling stock[link]

Nearly all of the locomotives and passenger cars used in Amtrak California service are owned by the State through the California Department of Transportation (Caltrans) and carry the 'CDTX' reporting mark.

The motive power for the Capitol Corridor and San Joaquin routes is provided primarily by 17 state-owned locomotives, of which 15 are EMD F59PHIs and two are GE P32-8WHs.^[3] The Pacific Surfliner route also uses EMD F59PHIs but they are Amtrak-owned instead of state-owned. Occasionally, locomotives from Amtrak's national system, such as GE P42s, can be spotted working on Amtrak California routes. The opposite has also occurred, with the Coast Starlight and California Zephyr occasionally being hauled by a CDTX unit.

State-owned passenger cars, dubbed "California Cars" and "Surfliners", are used on these three routes. They are a variant of Amtrak's Superliner bi-level passenger cars. A major difference between California Cars and Superliners is that California Cars have two sets of doors on each side instead of only one door on the Superliners, which speeds up boarding and alighting considerably.^[3] Additionally, California Cars are equipped with bicycle racks to permit transport of unboxed bicycles.

Consists on the San Joaquin, Capitol Corridor, and Pacific Surfliner routes usually include between four and six cars, with one locomotive and a cab control car on the rear end. Occasionally, Superliner equipment (coach or diner) from Amtrak's national fleet is used on some consists for replacement or maintenance purposes.

In 2007, Amtrak California paid for the repair of seven wreck-damaged Superliner Coaches owned by Amtrak in exchange for a six-year lease, intended to quickly add capacity on busy Capitol Corridor and San Joaquin trains. These have been repainted to a new paint scheme which is similar to the colors of the original California color paint, and has the current Amtrak logo on the middle left side of each car.

Livery[link]

Amtrak California utilizes a livery and logo that is different from the standard Amtrak colors. All state-owned locomotives, passenger cars and buses, with the exception of equipment used on the Pacific Surfliner route, are painted in the "California Colors" of blue and yellow. Each permanently assigned passenger car is named after a geographical feature of California.

The Capitol Corridor and San Joaquin trains are the two routes most identified with the Amtrak California image, since they extensively use "California Colored" equipment. The other state-supported rail route, the Pacific Surfliner, uses a unique blue and silver paint scheme that is different from the other Amtrak California-branded trains.

Routes[link]

[edit] Capitol Corridor

(Weekdays: 518, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546, 547, 548, 549, 551, 553; Weekends: 720, 723, 724, 727, 728, 729, 732, 733, 734, 736, 737, 738, 741, 742, 743, 744, 745, 746, 747, 748, 749, 751) :

A F59PHI leads the Capitol Corridor at Santa Clara Station.

The Capitol Corridor route runs north from San Jose through the East Bay to Oakland and Richmond, then east through the Delta communities of Martinez and Suisun City, and the Sacramento Valley cities of Davis and Sacramento. One Capitol Corridor train per day continues east of Sacramento during the afternoon commute to the small Sierra Nevada town of Auburn, returning in the morning. Plans have been proposed to extend an additional train per day to Reno, Nevada (a longtime major tourism and gaming destination for Northern Californians).

[edit] Pacific Surfliner

(562, 563, 564, 565, 566, 567, 571, 572, 573, 577, 578, 579, 580, 582, 583, 587, 589, 590, 591, 592, 595, 597, 763, 768, 769, 774, 775, 784, 785, 796, 792, 798, 799):

An Amtrak F59PHI locomotive designed for work on the Pacific Surfliner and occasionally, the Coast Starlight.

The Pacific Surfliner is a major commuting route in Southern California. The entire length of the line runs from San Luis Obispo in the north, down to San Diego in the south. It hugs the California coast for most of the route, providing a stunning backdrop. Most trains on the Pacific Surfliner route only travel a portion of the whole route. The Pacific Surfliner between Los Angeles and San Diego had previously operated as the San Diegan. The Pacific Surfliner now has one Weekday-Only Express Train. The Purpose of an Express Train is to decrease travel time. This weekday train, #563, makes all Station Stops except the following: San Juan Capistrano, Santa Ana, and Fullerton. It is run on the same schedule that Train #565 (Now a Weekend-Only Train) used to have; but is supposed to arrive into Los Angeles at least 20-30 Minutes Earlier. With 2.7 million passengers in fiscal year 2007, this is Amtrak's most heavily travelled service outside of the Northeast Corridor.^[4]

[edit] San Joaquin

(701, 702, 703, 704, 711, 712, 713, 714, 715, 716, 717, 718):

The San Joaquin parked at Bakersfield Station.

The San Joaquin operates twelve trains (six in each direction) each day between Bakersfield and Stockton. From Stockton, four trains from Bakersfield continue west to Oakland, while two trains proceed north to the state capital of Sacramento. Central Valley communities served include Fresno, Corcoran, Hanford, Lodi, Madera, Merced, Modesto, Turlock/Denair and Wasco. Delta/Bay communities of Antioch, Martinez, and Richmond are also served by the San Joaquin. Los Angeles is not served because in order to get there, the train must use the Tehachapi Pass line, where the Union Pacific prohibits passenger train use.

References[link]

External links[link]

• Amtrak California
  • Amtrak California Car Names
• The Rail Passenger Association of California (RailPAC) a statewide membership organization working for the expansion and improvement of rail passenger service within the states of California and Nevada.

State of California Flag Seal Nickname(s): The Golden State Motto(s): Eureka[1] Official language(s) English Spoken language(s) English (only) 57.6% Spanish 28.2%[2] Demonym Californian Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area Area  Ranked 3rd in the U.S.  - Total 163,696 sq mi (423,970 km2)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4.7  - Latitude 32° 32′ N to 42° N  - Longitude 114° 8′ W to 124° 26′ W Population  Ranked 1st in the U.S.  - Total 37,691,912 (2011 est)[3]  - Density 242/sq mi  (93.3/km2) Ranked 11th in the U.S.  - Median household income  US$61,021 (9th) Elevation    - Highest point Mount Whitney[4][5][6][7] 14,505 ft (4421.0 m)  - Mean 2,900 ft  (880 m)  - Lowest point Badwater Basin in Death Valley[5][6] −282[8] ft (-86.0 m) Before statehood California Republic Admission to Union  September 9, 1850 (31st) Governor Jerry Brown (D) Lieutenant Governor Gavin Newsom (D)[9] Legislature California State Legislature  - Upper house California State Senate  - Lower house California State Assembly U.S. Senators Dianne Feinstein (D) Barbara Boxer (D) U.S. House delegation 34 Democrats, 19 Republicans (list) Time zone Pacific: UTC -8/-7 Abbreviations CA Calif. US-CA Website www.ca.gov California State symbols The Flag of California. The Seal of California. Animate insignia Bird(s) California Quail Fish Golden Trout Flower(s) California Poppy Grass Purple Needlegrass Insect California Dogface Butterfly Mammal(s) California grizzly bear (State Animal )[1] Reptile Desert Tortoise Tree California Redwood Inanimate insignia Beverage Wine Colors Blue & Gold Dance West Coast Swing Fossil Sabre-toothed cat Gemstone Benitoite Mineral Native Gold Rock Serpentine Soil San Joaquin Song(s) "I Love You, California" Tartan California State Tartan Route marker(s) State Quarter Released in 2005 Lists of United States state insignia

California (pronounced ⁱ/kælɨˈfɔrnjə/) is a state located on the West Coast of the United States. It is by far the most populous U.S. state,^[10] and the third most extensive (after Alaska and Texas). It is home to the nation's second- and sixth-largest census statistical areas (Los Angeles Metropolitan Area and San Francisco Bay Area), and eight of the nation's fifty most populated cities (Los Angeles, San Diego, San Jose, San Francisco, Fresno, Sacramento, Long Beach and Oakland).^[11] The capital city is Sacramento.

California's diverse geography ranges from the Pacific Coast in the west, to the Sierra Nevada mountains in the east – from the Redwood–Douglas-fir forests of the northwest, to the Mojave Desert areas in the southeast. The center of the state is dominated by Central Valley, a major agricultural area. California contains both the highest and lowest points in the contiguous United States (Mount Whitney and Death Valley), and has the third-longest coastline of all states (after Alaska and Florida). Earthquakes are a common occurrence due to the state's location along the Pacific Ring of Fire: about 37,000 are recorded annually.^[12]

The name California once referred to a large area of North America claimed by Spain that included much of modern-day Southwestern United States and the Baja California peninsula. Beginning in the late 18th century, the area known as Alta California, comprising the California territory north of the Baja Peninsula, was colonized by the Spanish Empire as part of New Spain. In 1821, Alta California became a part of Mexico following its successful war for independence. Shortly after the beginning of the Mexican-American War in 1846, a group of American settlers in Sonoma declared an independent California Republic in Alta California. Though its existence was short-lived, its flag became the precursor for California's current state flag. American victory in the war led to the Treaty of Guadalupe Hidalgo, in which Mexico ceded Alta California to the United States. Western areas of Alta California became the state of California, which was admitted as the 31st state on September 9, 1850.

The California Gold Rush beginning in 1848 led to dramatic social and demographic change, with large scale immigration from the U.S. and abroad and an accompanying economic boom. Key developments in the early 20th century included the emergence of Los Angeles as the center of the American entertainment industry, and the growth of a large, state-wide tourism sector. The late 20th century saw the development of the technology and information sectors, punctuated by the growth of Silicon Valley. California's prosperous agricultural industry also emerged; at least half of the fresh fruit produced in the United States are now cultivated in California, and the state also leads in the production of vegetables.^[13] Other important contributors to its economy include aerospace, education, and manufacturing. If California were a country, it would be the eighth-largest economy in the world^[14] and the 34th most populous nation.

Etymology[link]

Welcome to California sign

The word California originally referred to the entire region composed of the Baja California peninsula of Mexico, the current U.S. states of California, Nevada, and Utah, and parts of Arizona, New Mexico, and Wyoming.

The name California is most commonly believed to have derived from a fictional paradise peopled by Black Amazons and ruled by Queen Calafia.^[15][16] The story of Calafia is recorded in a 1510 work The Adventures of Esplandián, written as a sequel to Amadis de Gaula by Spanish adventure writer Garci Rodríguez de Montalvo.^[17][18][19] The kingdom of Queen Calafia, according to Montalvo, was said to be a remote land inhabited by griffins and other strange beasts, and rich in gold.

Know ye that at the right hand of the Indies there is an island called California, very close to that part of the Terrestrial Paradise, which was inhabited by black women without a single man among them, and they lived in the manner of Amazons. They were robust of body with strong passionate hearts and great virtue. The island itself is one of the wildest in the world on account of the bold and craggy rocks.

— Chapter CLVII of The Adventures of Esplandián^[20]

The name California is the fifth oldest surviving European place-name in the US and was applied to what is now the southern tip of Baja California peninsula as the Island of California by a Spanish expedition led by Diego de Becerra and Fortún Ximénez, who landed there in 1533 at the behest of Hernán Cortés.^{[note 1]}

Geography[link]

Topographic map of California

Aerial view of the California Central Valley

Sierra Nevada

Yosemite National Park

Lake Tahoe

California adjoins the Pacific Ocean to the west, Oregon to the north, Nevada and Arizona to the east, and the Mexican state of Baja California to the south. With an area of 160,000 square miles (414,000 km²), it is the third-largest state in the United States in size, after Alaska and Texas.^[22] If it were a country, California would be the 59th-largest in the world in area.

In the middle of the state lies the California Central Valley, bounded by the coastal mountain ranges in the west, the Sierra Nevada to the east, the Cascade Range in the north and the Tehachapi Mountains in the south. The Central Valley is California's agricultural heartland and grows approximately one-third of the nation's food.^[23][24]

Divided in two by the Sacramento-San Joaquin River Delta, the northern portion, the Sacramento Valley serves as the watershed of the Sacramento River, while the southern portion, the San Joaquin Valley is the watershed for the San Joaquin River; both areas derive their names from the rivers that transit them. With dredging, the Sacramento and the San Joaquin Rivers have remained sufficiently deep that several inland cities are seaports.

The Sacramento-San Joaquin River Delta serves as a critical water supply hub for the state. Water is routed through an extensive network of canals and pumps out of the delta, that traverse nearly the length of the state, including the Central Valley Project and the State Water Project. Water from the Delta provides drinking water for nearly 23 million people, almost two-thirds of the state's population, and provides water to farmers on the west side of the San Joaquin Valley. The Channel Islands are located off the southern coast.

The Sierra Nevada (Spanish for "snowy range") includes the highest peak in the contiguous forty-eight states, Mount Whitney, at 14,505 ft (4421 m).^[4][5][6] The range embraces Yosemite Valley, famous for its glacially carved domes, and Sequoia National Park, home to the giant sequoia trees, the largest living organisms on Earth, and the deep freshwater lake, Lake Tahoe, the largest lake in the state by volume.

To the east of the Sierra Nevada are Owens Valley and Mono Lake, an essential migratory bird habitat. In the western part of the state is Clear Lake, the largest freshwater lake by area entirely in California. Though Lake Tahoe is larger, it is divided by the California/Nevada border. The Sierra Nevada falls to Arctic temperatures in winter and has several dozen small glaciers, including Palisade Glacier, the southernmost glacier in the United States.

About 45 percent of the state's total surface area is covered by forests,^[25] and California's diversity of pine species is unmatched by any other state. California contains more forestland than any other state except Alaska. Many of the trees in the California White Mountains are the oldest in the world; one Bristlecone pine has an age of 4,700 years.

In the south is a large inland salt lake, the Salton Sea. The south-central desert is called the Mojave; to the northeast of the Mojave lies Death Valley, which contains the lowest and hottest place in North America, the Badwater Basin at −282 feet (−86.0 m).^[8] The horizontal distance from the nadir of Death Valley to the summit of Mount Whitney is less than 90 miles (140 km). Indeed, almost all of southeastern California is arid, hot desert, with routine extreme high temperatures during the summer. The southeastern border of California with Arizona is entirely formed by the Colorado River, from which the southern part of the state gets about half of its water.

Along the California coast are several major metropolitan areas, including Greater Los Angeles Area, the San Francisco Bay Area, and the San Diego metropolitan area.

As part of the Ring of Fire, California is subject to tsunamis, floods, droughts, Santa Ana winds, wildfires, landslides on steep terrain, and has several volcanoes. It sees numerous earthquakes due to several faults, in particular the San Andreas Fault.

Climate[link]

Snow on the mountains of Southern California.

Death Valley, in the desert regions of Eastern California

California's climate varies from Mediterranean to subarctic.

Much of the state has a Mediterranean climate, with cool, rainy winters and dry summers. The cool California Current offshore often creates summer fog near the coast. Farther inland, one encounters colder winters and hotter summers.

Northern parts of the state average higher annual rainfall than the south. California's mountain ranges influence the climate as well: some of the rainiest parts of the state are west-facing mountain slopes. Northwestern California has a temperate climate, and the Central Valley has a Mediterranean climate but with greater temperature extremes than the coast. The high mountains, including the Sierra Nevada, have a mountain climate with snow in winter and mild to moderate heat in summer.

The east side of California's mountains produce a rain shadow, creating expansive deserts. The higher elevation deserts of eastern California see hot summers and cold winters, while the low deserts east of the southern California mountains experience hot summers and nearly frostless mild winters. Death Valley, a desert with large expanses below sea level, is considered the hottest location in North America; the highest temperature in the Western Hemisphere, 134 °F (57 °C), was recorded there on July 10, 1913. The lowest temperature in California was −45 °F in 1937 in Boca.

Ecology[link]

California is one of the richest and most diverse parts of the world, and includes some of the most endangered ecological communities. California is part of the Nearctic ecozone and spans a number of terrestrial ecoregions.^[26]

California's large number of endemic species includes relict species, which have died out elsewhere, such as the Catalina Ironwood (Lyonothamnus floribundus). Many other endemics originated through differentiation or adaptive radiation, whereby multiple species develop from a common ancestor to take advantage of diverse ecological conditions such as the California lilac (Ceanothus). Many California endemics have become endangered, as urbanization, logging, overgrazing, and the introduction of exotic species have encroached on their habitat.

Flora and fauna[link]

Giant sequoias in Calaveras Big Trees State Park

Joshua trees in Inyo Mountains above Eureka Valley.

California boasts several superlatives in its collection of flora: the largest trees, the tallest trees, and the oldest trees. California's native grasses are perennial plants.^[27] After European contact, these were generally replaced by invasive species of European annual grasses; and, in modern times, California's hills turn a characteristic golden-brown in summer.^[28]

Because California has the greatest diversity of climate and terrain, the state has six life zones which are the lower Sonoran (desert); upper Sonoran (foothill regions and some coastal lands), transition (coastal areas and moist northeastern counties); and the Canadian, Hudsonian, and Arctic Zones, comprising the state's highest elevations.^[29]

Plant life in the dry climate of the lower Sonoran zone contains a diversity of native cactus, mesquite, and paloverde. The Joshua tree is found in the Mojave Desert. Flowering plants include the dwarf desert poppy and a variety of asters. Fremont cottonwood and valley oak thrive in the Central Valley. The upper Sonoran zone includes the chaparral belt, characterized by forests of small shrubs, stunted trees, and herbaceous plants. Nemophila, mint, phacelia, viola, and the California poppy (Eschscholtzia californica) – the state flower – also flourish in this zone, along with the lupine, more species of which occur here than anywhere else in the world.^[29]

The transition zone includes most of California's forests with the redwood (Sequoia sempervirens) and the "big tree" or giant sequoia (Sequoia gigantea), among the oldest living things on earth (some are said to have lived at least 4,000 years). Tanbark oak, California laurel, Sugar Pine, madrona, broad-leaved maple, and Douglas-fir also grow here. Forest floors are covered with swordfern, alumnroot, barrenwort, and trillium, and there are tickets of huckleberry, azalea, elder, and wild currant. Characteristic wild flowers include varieties of mariposa, tulip, and tiger and leopard lilies.^[30]

The high elevations of the Canadian zone allow the Jeffrey Pine, red fir, and Lodgepole Pine to thrive. Brushy areas are abundant with dwarf manzanita and ceanothus; the unique Sierra puffball is also found here. Right below the timeberline, in the Hudsonian zone, the whitebark, foxtail, and silver pines grow. At about 10,500 ft (3,200 m), begins the Arctic zone, a treeless region whose flora include a number of wildflowers, including Sierra primrose, yellow columbine, alpine buttercup, and alpine shooting star.^[29][31]

Common plants that have been introduced to the state include the eucalyptus, acacia, pepper tree, geranium, and Scotch broom. The species that are federally classified as endangered are the Contra Costa wallflower, Antioch Dunes evening primrose, Solano Grass, San Clemente Island larkspur, salt marsh bird's beak, McDonald's rock-cress, and Santa Barbara Island Liveforever. As of December 1997^[update], 85 plant species were listed as threatened or endangered.^[29]

In the deserts of the lower Sonoran zone, the mammals include the jackrabbit, kangaroo rat, squirrel, and opossum. Common birds include the owl, roadrunner, Cactus Wren, and various species of hawk. The area's reptilian life include the sidewinder viper, desert tortoise, and horned toad. The upper Sonoran zone boasts mammals such as the antelope, brown-footed woodrat, and Ring-tailed Cat. Birds unique to this zone are the California thrasher, bushtit, and California Condor.^{[29][32][33][34]}

In the transition zone, there are Colombian Black-tailed Deer, black bears, gray foxes, cougars, bobcats, and Roosevelt elk. Reptiles such as the garter snakes and rattlesnakes inhabit the zone. In addition, amphibians such as the water puppy and redwood salamander are common too. Birds such as the kingfisher, chickadee, towhee, and hummingbird thrive here as well.^[29][35]

The Canadian zone mammals include the Mountain Weasel, Snowshoe Hare, and several species of chipmunks. Conspicuous birds include the blue-fronted jay, Sierra chickadee. Sierra hermit thrush, water ouzel, and Townsend's solitaire. As one ascends into the Hudsonian zone, birds become scarcer. While the Sierra rosy finch is the only bird native to the high Arctic region, other bird species such as the hummingbird and Clark's Nutcracker. Principal mammals found in this region include the Sierra coney, White-tailed Jackrabbit, and the Bighorn Sheep. As of April 2003^[update], the Bighorn Sheep was listed as endangered by the US Fish and Wildlife Service. The fauna found throughout several zones are the mule deer, coyote, mountain lion, Northern Flicker, and several species of hawk and sparrow.^[29]

Aquatic life in California thrives, from the state's mountain lakes and streams to the rocky Pacific coastline. Numerous trout species are found, among them rainbow, golden, and Tahoe. Migratory species of salmon are common as well. Deep-sea life forms include sea bass, yellowfin tuna, barracuda, and several types of whale. Native to the cliffs of northern California are seals, sea lions, and many types of shorebirds, including migratory species.^[29]

As of April 2003, 118 California animals were on the federal endangered list; 181 plants were listed as endangered or threatened. Endangered animals include the San Joaquin kitfox, Point Arena mountain beaver, Pacific pocket mouse, Salt Marsh Harvest Mouse, Morro Bay kangaroo rat (and five other species of kangaroo rat), Amargosa vole, California Least Tern, California Condor, Loggerhead Shrike, San Clemente sage sparrow, San Francisco garter snake, five species of salamander, three species of chub, and two species of pupfish. Eleven butterflies are also endangered and two that are threatened are on the federal list. Among threatened animals are the coastal California Gnatcatcher, Paiute cutthroat trout, southern sea otter, and Northern Spotted Owl. California has a total of 290,821 acres (1,176.91 km²) of National Wildlife Refuges.^[29] As of September 2010^[update], 123 California animals were listed as either endangered or threatened on the federal list provided by the US Fish & Wildlife Service.^[36] Also, as of the same year^[update], 178 species of California plants were listed either as endangered or threatened on this federal list.^[36]

Rivers[link]

The state's coasts, rivers, and other bodies of water are looked after by the California Coastal Commission.

The two most prominent rivers within California are the Sacramento River and the San Joaquin River, which drain the Central Valley and the west slope of the Sierra Nevada and flow to the Pacific Ocean through San Francisco Bay. Several major tributaries feed into the Sacramento and the San Joaquin, including the Pit River, the Tuolumne River, and the Feather River.

The Owens River takes runoff from the southeastern slopes of the Sierra Nevada and flows into Owens Lake. The Eel River and Salinas River each drain portions of the California coast, north and south of San Francisco Bay, respectively. The Mojave River is the primary watercourse in the Mojave Desert, and the Santa Ana River drains much of the Transverse Ranges as it bisects Southern California.

Some other important rivers are the Klamath River and the Trinity River in the far north coast, and the Colorado River on the southeast border with Arizona.

Regions[link]

Mount Whitney (l), the highest point in the Contiguous U.S., is less than 90 miles (140 km) away from Badwater Basin in Death Valley (r), the lowest point in North America

History[link]

History of California
This article is part of a series
Timeline
To 1899
Gold Rush (1848)
US Civil War (1861-1865)
Since 1900
Topics
Maritime · Railroad ·
Highways · Slavery
Cities
Los Angeles · San Franicsco ·
San Diego · San Jose ·
Sacramento
California Portal v t e

Settled by successive waves of arrivals during the last 10,000 years, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America; The Indigenous peoples of California included more than 70 distinct groups of Native Americans, ranging from large, settled populations living on the coast to groups in the interior. California groups also were diverse in their political organization with bands, tribes, villages, and on the resource-rich coasts, large chiefdoms, such as the Chumash, Pomo and Salinan. Trade, intermarriage and military alliances fostered many social and economic relationships among the diverse groups.

The first European to explore the coast as far north as the Russian River was the Portuguese Juan Rodríguez Cabrillo in 1542. Some 37 years later English explorer Francis Drake also explored and claimed an undefined portion of the California coast in 1579. Spanish traders made unintended visits with the Manila Galleons on their return trips from the Philippines beginning in 1565.^[37] Sebastián Vizcaíno explored and mapped the coast of California in 1602 for New Spain.

The Russians from Alaska established their largest settlement in California, Fort Ross, in 1812.

Beginning in the 1820s, trappers and settlers from the U.S. and Canada began to arrive in Northern California. These new arrivals used the Siskiyou Trail, California Trail, Oregon Trail and Old Spanish Trail to cross the rugged mountains and harsh deserts surrounding California. In this period, Imperial Russia explored the California coast and established a trading post at Fort Ross.

Spanish missionaries began setting up 21 California Missions along the coast of what became known as Alta California (Upper California), together with small towns and presidios. In 1821 the Mexican War of Independence gave Mexico (including California) independence from Spain; for the next 25 years, Alta California remained a remote northern province of the nation of Mexico. Cattle ranches, or ranchos, emerged as the dominant institutions of Mexican California. After Mexican independence from Spain, the chain of missions became the property of the Mexican government and were secularized by 1832. The ranchos developed under ownership by Californios (Spanish-speaking Californians) who had received land grants, and traded cowhides and tallow with Boston merchants.

San Francisco harbor c. 1850. Between 1847 and 1870, the population of San Francisco increased from 500 to 150,000.

In 1846 settlers rebelled against Mexican rule during the Bear Flag Revolt. Afterwards, rebels raised the Bear Flag (featuring a bear, a star, a red stripe and the words "California Republic") at Sonoma. The Republic's first and only president was William B. Ide,^[38] who played a pivotal role during the Bear Flag Revolt.

The California Republic was short lived; the same year marked the outbreak of the Mexican-American War (1846–1848). When Commodore John D. Sloat of the United States Navy sailed into Monterey Bay and began the military occupation of California by the United States, Northern California capitulated in less than a month to the U.S. forces. After a series of defensive battles in Southern California, the Treaty of Cahuenga was signed by the Californios on January 13, 1847, securing American control in California. Following the Treaty of Guadalupe Hidalgo that ended the war, the region was divided between Mexico and the U.S.; the western territory of Alta California, was to become the U.S. state of California, and Arizona, Nevada, Colorado and Utah became U.S. Territories, while the lower region of California, the Baja Peninsula, remained in the possession of Mexico.

In 1848 the non-native population of California was estimated to be no more than 15,000. After gold was discovered, the population burgeoned with U.S. citizens, Europeans and other immigrants during the great California Gold Rush. By 1854 over 300,000 settlers had come.^[39] On September 9, 1850, as part of the Compromise of 1850, California was admitted to the United States undivided as a free state, denying the expansion of slavery to the Pacific Coast.

However, California's native population precipitously declined due to murder, starvation, and infections. Like in other states, the native inhabitants were forcefully removed from their lands by incoming miners, ranchers, and farmers. And despite the fact that California entered the union as a free state, the Native population was enslaved under the 1853 Act for the Government and Protection of Indians.^[40] There were several massacres, including the Yontoket Massacre, the Bloody Island Massacre at Clear Lake, and the Old Shasta Massacre, in which hundreds of indigenous people were killed. Between 1850 and 1860, California paid around 1.5 million dollars (some 250,000 of which was reimbursed by the federal government)^[41] to hire militias whose purpose was to protect settlers from the indigenous populations. In subsequent decades, the native population was placed in reservations and rancherias, which were often very small and isolated and lacked adequate natural resources or funding from the government to sustain the populations living on them.^[40] As a result, the rise of California brought great hardship for the native inhabitants. Several scholars, including Benjamin Madley and Ed Castillo, have described the actions of the California government as a genocide.^[42]

The seat of government for California under Spanish and later Mexican rule was located at Monterey from 1777 until 1835, when Mexican authorities abandoned^{[dubious – discuss]} California, leaving their missions and military forts behind.^[43] In 1849 the Constitutional Convention was first held there. Among the duties was the task of determining the location for the new state capital. The first legislative sessions were held in San Jose (1850–1851). Subsequent locations included Vallejo (1852–1853), and nearby Benicia (1853–1854); these locations eventually proved to be inadequate as well. The capital has been located in Sacramento since 1854^[44] with only a short break in 1861 when legislative sessions were held in San Francisco due to flooding in Sacramento.

Hollywood film studios, 1922

Initially, travel between California and the rest of the continental U.S. was time consuming and dangerous. A more direct connection came in 1869 with the completion of the First Transcontinental Railroad through Donner Pass in the Sierra Nevada mountains. Once completed, hundreds of thousands of U.S. citizens came west, where new Californians were discovering that land in the state, if irrigated during the dry summer months, was extremely well suited to fruit cultivation and agriculture in general. Vast expanses of wheat, other cereal crops, vegetable crops, cotton, and nut and fruit trees were grown (including oranges in Southern California), and the foundation was laid for the state's prodigious agricultural production in the Central Valley and elsewhere.

Migration to California accelerated during the early-20th century with the completion of major transcontinental highways like the Lincoln Highway and Route 66. In the period from 1900 to 1965, the population grew from fewer than one million to become the most populous state in the Union. In order to meet the population's needs, major engineering feats like the California and Los Angeles Aqueducts; the Oroville and Shasta Dams; and the Bay and Golden Gate Bridges were built across the state. The state government also adopted the California Master Plan for Higher Education in 1960 to develop a highly efficient system of public education.

Meanwhile, attracted to the mild Mediterranean climate, cheap land, and the state's wide variety of geography, filmmakers established the studio system in Hollywood in the 1920s. A couple of decades later, Stanford University and its Dean of Engineering Frederick Terman began encouraging faculty and graduates to stay in California instead of leaving the state, and develop a high-tech region in the area now known as Silicon Valley.^[45] As a result of these efforts, California is currently regarded as a world center of the entertainment and music industries, of technology and engineering businesses, and as the U.S. center of agricultural production.

Demographics[link]

The population density of California.

Population[link]