In June 1846, a number of American immigrants in Alta California rebelled against the Mexican department’s government. The immigrants had not been allowed to buy or rent land and had been threatened with expulsion from California because they had entered without official permission. Mexican officials were concerned about a coming war with the United States coupled with the growing influx of Americans into California. The rebellion was soon overtaken by the beginning of the Mexican–American War.
The term "California Republic" appeared only on the flag the insurgents raised in Sonoma. It indicated their aspiration of forming a republican government for California. The insurgents elected military officers but no civil structure was ever …show more content…
It had evolved into a semi-autonomous region with open discussions among Californios about whether California should remain with Mexico; seek independence; or become annexed to the United Kingdom, France, or the United States. The 1845 removal of Manuel Micheltorena, the latest governor to be sent by Mexico and forcefully ejected by the Californians, resulted in a divided government. The region south of San Luis Obispo was ruled by Governor Pio Pico with his capital in The Town of Our Lady the Queen of Angels of the Porciúncula River, now known as Los Angeles. The area to the north of the pueblo of San Luis Obispo was under the control of Alta California's Commandante General José Castro with headquarters near Monterey, the traditional capital and, significantly, the location of the Customhouse. Pico and Castro disliked each other personally and soon began escalating disputes over control of the Customhouse