Land the U.S. acquired from Mexico following the war in 1848
Shown is the area Mexico ceded to the United States in 1848, minus Texan claims. The Mexican Cession consisted of the present-day U.S. states of California, Nevada, Utah, most of Arizona, the western half of New Mexico, the western quarter of Colorado, and the southwest corner of Wyoming.
The Mexican Cession (Spanish: Cesión mexicana) is the region in the modern-day western United States that Mexico previously controlled, then ceded to the United States in the Treaty of Guadalupe Hidalgo in 1848 after the Mexican–American War. This region had not been part of the areas east of the Rio Grande that had been claimed by the Republic of Texas, though the Texas annexation resolution two years earlier had not specified the southern and western boundary of the new state of Texas. At roughly 529,000 square miles (1,370,000 km2), not including any Texas lands, the Mexican Cession was the third-largest acquisition of territory in U.S. history, surpassed only by the 827,000-square-mile (2,140,000 km2) Louisiana Purchase and the 586,000-square-mile (1,520,000 km2) Alaska Purchase.
Most of the area had been the Mexican territory of Alta California, while a southeastern strip on the Rio Grande had been part of Santa Fe de Nuevo México, most of whose area and population were east of the Rio Grande on land that had been claimed by the Republic of Texas since 1835, but never controlled or even approached aside from the Texan Santa Fe Expedition. Mexico controlled the territory later known as the Mexican Cession, with considerable local autonomy punctuated by several revolts and few troops sent from central Mexico, in the period from 1821–1822 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 in the Treaty of Limits. The eastern boundary of the Mexican Cession was the Texas claim at the Rio Grande and extending north from the headwaters of the Rio Grande, not corresponding to Mexican territorial boundaries. The southern boundary was set by the Treaty of Guadalupe Hidalgo, which followed the Mexican boundaries between Alta California (to the north) and Baja California and Sonora (to the south).
Until the U.S. Civil War, the question of whether states formed out of Mexican Cession lands would or would not permit slavery was a major American political issue.
The MexicanCession (Spanish: Cesión mexicana) is the region in the modern-day western United States that Mexico previously controlled, then ceded to the...
Texas (1845) and the acquisition of the vast new MexicanCession territories (1848), after the Mexican–American War, created further north–south conflict...
as a free state, while the remaining portions of the MexicanCession were organized into New Mexico Territory and Utah Territory. Under the concept of popular...
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The Second Federal Republic of Mexico (Spanish: Segunda República Federal de México) refers to the period of Mexican history involving a second attempt...
place in the aftermath of the Mexican–American War and debates over the extension of slavery into the MexicanCession. After the Whig Party and the Democratic...
threatened to divide the Union. Debate over the status of slavery in the MexicanCession dominated the national political agenda and led to threats of secession...
The Mexican Repatriation is the common name given to the repatriation, deportation, and expulsion of Mexicans and Mexican Americans from the United States...
northeast Texas, before independence and the MexicanCession The territorial extent of the Santa Fe de Nuevo México Territory The exact date that the division...
Oñate in 1605. After the Mexican-American War, Cocopah lands were split between the US and Mexico through the MexicanCession resulting from the Treaty...
location as part of the Louisiana Purchase, the Oregon Country, and the MexicanCession, the land which became Wyoming has a complicated history of territorial...
effort. The Democrats had a record of prosperity and had acquired the Mexicancession and parts of Oregon country. It appeared almost certain that they would...
controversy was eventually ended by the MexicanCession, which added the territories of Alta California and Nuevo México to the United States, both more sparsely...
debates, as the 31st Congress decided whether to allow slavery in the MexicanCession. Unlike Taylor, Fillmore supported Henry Clay's omnibus bill, the basis...
After months of marauding and scalp hunting, the gang crosses into the MexicanCession, where they eventually set up a systematic and brutal robbing operation...
controversy was eventually ended by the MexicanCession, which added the territories of Alta California and Nuevo México to the United States, both more sparsely...
Guadalupe Hidalgo, in which Mexico ceded hundreds of thousands of square miles of territory known as the MexicanCession. By 1847, General Zachary Taylor...
brought the area officially under US control in 1848 as part of the MexicanCession. After the Second Manifesto was issued, the LDS Church began to excommunicate...
claimed by the Republic of Texas is known as the MexicanCession. That is to say, the MexicanCession is construed not to include any territory east of...
Tamaulipas and Northern Mexico, and identified with both Spanish and Mexican culture. 1821, Agustin de Iturbide launched a drive for Mexican Independence. Texas...
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