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The "Mexican Cession" was the vast area of land constituting most of the present Southwest United States, from California eastward to New Mexico. The lands were ceded to the US in 1848 under the Treaty of Guadalupe Hidalgo that ended the Mexican-American War (1846-1848). The cession amounted to more than 1/3 of the total area of pre-war Mexico, including all or part of the current US states of California, Nevada, Utah, Arizona, and New Mexico. The US settlement to Mexico totalled $18.5 million. Five years later, the US purchased a much smaller disputed border area for $10 million in the Gadsden Purchase.

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15y ago

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