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In 1848, at the end of the Mexican-American War (1846-1848).
The year that California became a territory was around 1848 after the Mexican-American War. It became a state in 1850.
California was acquired from Mexico at the end of the Mexican-American War (1846-1848). Since then, southern California has been part of the US-Mexico Border.
Robert Stockon lead the U.S. Army forces capturing California in the Mexican-American War.
An Independent Republic.
An Independent republic
Very few of the former Mexican Citizens chose to move south. Most opted to remain where they were for one year and automatically become US Citizens. The impact on the Mexican American War population is that they are huge today in California, Arizona New Mexico. Nevada, Utah and Colarado. In these areas the population grew very large after the Mexican American War.
in California, a small group of American citizens revolted against the Mexican government. The rebels easily defeated the small force in the village of Sonoma and forced the Mexican leader to sign a treaty turning California over to them. They then declared Cali to be The Independent Republic of California on June 14, 1846.
California was part of the land ceded to the United States by Mexico in 1848 after they lost the Mexican-American War. It became a U.S. state in September 1850. California is one of the very few added states that did not go through a territorial period before statehood. It was rushed to statehood due to the California Gold Rush.
American settlers started to settle in California. Because of that, there were more Americans in California than Mexicans or Indians. Since it was mostly populated with Americans, the Americans revolted, refused to be under Mexican rule, and fought for their independence.
The Treaty of Guadalupe Hidalgo gave to Mexicans in the newly purchased territories the choice of U.S. citizenship or Mexican citizenship. However, the Treaty provided that if they chose to remain Mexican citizens, they must relocate.
Mexico gave up its claims to California as a result of the Mexican War.