History
Before Europeans arrived, California was one of the most densely populated and linguistically diverse parts of North America, home to peoples including the Chumash of the Santa Barbara coast, the Tongva of the Los Angeles basin, the Ohlone around San Francisco Bay, the Miwok of the Sierra foothills, the Pomo and Yurok in the north and the Kumeyaay around San Diego. Juan Rodríguez Cabrillo sailed into San Diego Bay in 1542, but Spain only settled in 1769, when Franciscan friars led by Junípero Serra founded the first of 21 missions along El Camino Real, backed by presidios at San Diego, Monterey and San Francisco. The missions forced Native converts into labour, and disease devastated their communities.
California became part of Mexico in 1821, and great cattle ranchos later replaced mission lands. In 1846 American settlers raised the Bear Flag at Sonoma, and the United States seized California in the Mexican–American War. Gold was found at Sutter's Mill in January 1848, weeks before the treaty ending the war, and the Gold Rush drew hundreds of thousands of people, turning San Francisco into a city and making California a state in 1850. For Native Californians it was a catastrophe: violence, including state-funded militia campaigns, disease and starvation cut their numbers drastically within two decades, which the state's governor formally described as genocide in a 2019 apology.
Chinese workers built the Central Pacific Railroad and then faced exclusion laws. The 1906 earthquake and fire destroyed much of San Francisco, and film-makers settled in Hollywood from the 1910s. In 1942 Japanese Americans were removed from the coast and held in camps such as Manzanar and Tule Lake. Aerospace and war industries, freeways and suburbs followed, then the Berkeley protests, the farmworkers' movement of Cesar Chavez, the growth of Silicon Valley, and in recent years increasingly destructive wildfires, from the Camp Fire that destroyed Paradise in 2018 to the Los Angeles fires of January 2025.
