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The Constitutive Act of the Mexican Federation.
On January 31, 1824, the Constitutive Act of the Mexican Federation was promulgated. -
Mexico would cede half of its territory
The Treaty, ratified on May 30, 1848, established that Mexico would cede half of its territory: all of what are now the states of California, Nevada, Utah, New Mexico, Texas, Colorado, Arizona, and parts of Wyoming. Kansas and Oklahoma.