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
Direct colonial rule Direct colonial rule Direct colonial rule is a form of colonialism that involves the establishment of a centralized foreign authority within a territory, which is run by colonial officials. According to Michael W. Doyle of Harvard University, in a system of direct rule, the native population is excluded from all but the lowest level of the colonial government. Ugandan academic Mahmood Mamdani classifies direct rule as centralized despotism: a system where natives were not considered citizens. The opposite of direct colonial rule is indirect rule, which integrates pre-established local elites and native institutions into the administration of the colonial government.