Contra Costa County, California
In 1821 Mexico gained independence from Spain. While little changed in ranchero life, the Mexican War of Independence resulted in the secularization of the missions with the re-distribution of their lands, and a new system of land grants under the Mexican Federal Law of 1824. Mission lands extended throughout the Bay Area, including portions of Contra Costa County. Between 1836 and 1846, during the era when California was a province of independent Mexico, the following 15 land grants were made in Contra Costa County.
Fort Point, San Francisco
Mexico won independence from Spain in 1821, gaining control of the region and the fort, but in 1835 the Mexican army moved to Sonoma leaving the castillo's adobe walls to crumble in the wind and rain. On July 1, 1846, after the Mexican–American War broke out between Mexico and the United States, U.S. forces, including Captain John Charles Fremont, Kit Carson and a band of 10 followers, captured and occupied the empty castillo and spiked (disabled) the cannons.