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
Bolivian War of Independence Bolivian War of Independence The Bolivian war of independence began in 1809 with the establishment of government juntas in Sucre and La Paz, after the Chuquisaca Revolution and La Paz revolution. These Juntas were defeated shortly after, and the cities fell again under Spanish control. The May Revolution of 1810 ousted the viceroy in Buenos Aires, which established its own junta. Buenos Aires sent three military campaigns to the Charcas, headed by Juan José Castelli, Manuel Belgrano and José Rondeau, but the royalists ultimately prevailed over each one. However, the conflict grew into a guerrilla war, the War of the