California-based

California is a state in the Western United States. With over 38.9million residents across a total area of approximately , it is the most populous U.S. state, the third-largest U.S. state by area, and the most populated subnational entity in North America. California borders Oregon to the north, Nevada and Arizona to the east, and the Mexican state of Baja California to the south; it has a coastline along the Pacific Ocean to the west. The Greater Los Angeles and San Francisco Bay areas in California are the nation's second and fifth-most populous urban regions, respectively. Greater Los Angeles has over 18.7 million residents and the San Francisco Bay Area has over 9.6 million residents. Los Angeles is the state's most populous city and the nation's second-most populous city. San Francisco is the second-most densely populated major city in the country. Los Angeles County is the country's most populous county, and San Bernardino County is the nation's largest county by area. Sacramento is the state's capital. California's economy is the largest of any state within the United States, with a $3.6 trillion gross state product (GSP) . It is the largest sub-national economy in the world. If California were a sovereign nation, it would rank as the world's fifth-largest economy , behind India and ahead of the United Kingdom, as well as the 37th most populous. The Greater Los Angeles area and the San Francisco area are the nation's second- and fourth-largest urban economies ($1.0trillion and $0.6trillion respectively ). The San Francisco Bay Area Combined Statistical Area had the nation's highest gross domestic product per capita ($106,757) among large primary statistical areas in 2018, and is home to five of the world's ten largest companies by market capitalization and four of the world's ten richest people. Slightly over 84 percent of the state's residents 25 or older hold a high school degree, the lowest high school education rate of all 50 states. Prior to European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America, and the indigenous peoples of California constituted the highest Native American population density north of what is now Mexico. European exploration in the 16th and 17th centuries led to the colonization of California by the Spanish Empire. In 1804, it was included in Alta California province within the Viceroyalty of New Spain.