Mexican Cession Mexican Cession, with considerable local autonomy punctuated by several revolts and few troops sent from central Mexico, in the period from 1821–22 after independence from Spain up through 1846 when U.S. military forces seized control of California and New Mexico on the outbreak of the Mexican–American War. The northern boundary of the 42nd parallel north was set by the Adams–Onís Treaty signed by the United States and Spain in 1821 and ratified by Mexico in 1831. The eastern boundary of the Mexican Cession was the Texas claim at the Rio Grande and extending north from the headwaters of the Jojo
Mexican War of Independence go to war happily! God wants us to finish off the Spaniards! We do not care if we die without confession! Is this not our land?" The viceroy attempted to address the apparent cause of the riot, higher maize prices that affected the urban poor. But the 1692 riot "represented class warfare that put Spanish authority at risk. Punishment was swift and brutal, and no further riots in the capital challenged the Pax Hispanica." The various indigenous rebellions in the colonial era were often to throw off crown rule, but they were not an independence movement as such. However, during