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.
Álvaro Obregón
Obregón also sought to shape public perceptions of the Revolution and its place in history by staging elaborate celebrations in 1921 on the centenary of Mexico's independence from Spain. There had been such celebrations in 1910 by the Díaz regime, commemorating the start of the insurgency by Miguel Hidalgo. The political fact of independence was achieved by former royalist officer Agustín de Iturbide, who was more celebrated by conservatives in post-independence Mexico than liberals. However, 1921 provided a date for Obregon's government to shape historical memory of independence and the Revolution. After a decade of violence during the Revolution, the centennial celebrations provided an opportunity for Mexicans to reflect on their history and identity, as well as to enjoy diversions in peacetime. For Obregón, the centennial was a way to emphasize that revolutionary initiatives had historical roots and that like independence, the Revolution presented new opportunities for Mexicans. Obregón "intended to use the occasion to shore-up popular support for the government, and, by extension, the revolution itself." Unlike the centennial celebrations in 1910, the one of 1921 had no monumental architecture to inaugurate.