Mexico Ceded the Southwest Territory to the U.S. in 1848

The Mexican Cession is a historical name for the region of the present day southwestern United States that was ceded to the U.S. by Mexico in 1848 under the Treaty of Guadalupe Hidalgo following the Mexican-American War. The cession of this territory from Mexico was a condition for the end of the war, as United States troops occupied Mexico City, and Mexico risked being completely annexed by the U.S.

The United States also paid $15,000,000 ($298,310,309 in 2005) for the land, and agreed to assume $3.25 million in debts to US citizens.[1] The land ceded by Mexico is 14.9% of the total area of the current United States territory.[2]

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The region includes all of the present-day states of California, Nevada, and Utah, as well as portions of:

Arizona excluding the region later annexed in the Gadsden Purchase

Colorado west of the boundary of the former Republic of Texas

New Mexico west of the Rio Grande and excluding the Gadsden Purchase

Wyoming west of the former Republic of Texas boundary and south of the 42nd parallel.

The treaty also specified the Texas-Mexican border as being at the Rio Grande (Río Bravo del Norte). Previously the portion of Texas between the Nueces River and the Rio Grande had remained disputed throughout the existence of the Republic of Texas. The United States had already claimed the area as part of the Texas Annexation in 1845.

[link to en.wikipedia.org]

There is a map showing the territory ceded.

Illegal Mexicans, you have no right to be here.
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