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
Angolan War of Independence under Portuguese rule became a major goal for the governments of the independent territory. The sharp recession and the chaos in many areas of Angolan life eroded the initial impetus of nationalistic fervor. There were also eruptions of black racism in the former overseas province against white and mulatto Angolans. Angolan War of Independence The Angolan War of Independence (1961–1974) began as an uprising against forced cotton cultivation, and it became a multi-faction struggle for the control of Portugal's overseas province of Angola among three nationalist movements and a separatist movement. The war ended when a leftist military coup in