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.
José María Morelos
José María Teclo Morelos Pérez y Pavón () (September 30, 1765, City of Valladolid, now Morelia, Michoacán – December 22, 1815, San Cristóbal Ecatepec, State of México) was a Mexican Roman Catholic priest and revolutionary rebel leader who led the Mexican War of Independence movement, assuming its leadership after the execution of Miguel Hidalgo y Costilla in 1811. Morelos and Ignacio López Rayón are credited with organizing the war of independence. Under Morelos the Congress of Anáhuac was installed on September 13, 1813 and in November 6 of the same year congress declared the country's independence. On October 22, 1814 a constitution, "Decreto Constitucional para la Libertad de la América Mexicana", was drafted by the Congress which declared that Mexico would be a Republic.