History of Hispanic and Latino Americans in the United States
In 1821, Mexico gained independence from Spain, annexing the southwest of the present United States, including Arizona. As missions began to wither, Mexico began auctioning off more land, causing the Pimería Alta and the Apachería to shrink as territory expanded. In the meantime, American mountain men began to enter the region, looking to trap beavers for their pelts. In 1836, Texas declared independence from Mexico and claimed much of the territory in the northern lands of Mexico. When the United States annexed Texas in 1846 over the strong objections of the Mexican government, U.S. troops moved into disputed territory. The hostilities erupted in the Mexican–American War (1846–1848). The U.S. occupied Mexico City and forced the newly founded Mexican Republic to give up its northern half, including the later Arizona.
History of New Mexico
The decade that led up to independence was a painful period in the history of Mexico. In 1810 catholic priest Miguel Hidalgo instigated a war for independence in central Mexico, a struggle that quickly took on the character of a class war. The following year, military captain Las Casas instigated a coup within the Imperial regime. Sympathizing with the poor underclass, Las Casas opened up a line of dialogue with the revolutionaries. This caused the Spanish elite to instigate its own counter coup and executed Las Casas. For years afterward the regime failed to regain coherency and the mandate to administrate. These ideological struggles affected peripheral New Mexico much less than they did the national center, but it resulted in a sense of alienation with central authority.