History of Hispanic and Latino Americans in the United States
In 1821, Mexico gained independence from Spain, annexing the southwest of the present United States, including Arizona. As missions began to wither, Mexico began auctioning off more land, causing the Pimería Alta and the Apachería to shrink as territory expanded. In the meantime, American mountain men began to enter the region, looking to trap beavers for their pelts. In 1836, Texas declared independence from Mexico and claimed much of the territory in the northern lands of Mexico. When the United States annexed Texas in 1846 over the strong objections of the Mexican government, U.S. troops moved into disputed territory. The hostilities erupted in the Mexican–American War (1846–1848). The U.S. occupied Mexico City and forced the newly founded Mexican Republic to give up its northern half, including the later Arizona.
Costa Rica–Mexico relations
Costa Rica and Mexico are two Latin American nations that share a common history in the fact that both nations were colonized by the Spanish empire. During Spanish colonization, Costa Rica was under the administration of the Viceroyalty of New Spain in Mexico City. In 1821, Mexico gained independence from Spain and Costa Rica became part of the First Mexican Empire. In 1823, the empire dissolved and Costa Rica, along with El Salvador, Guatemala, Honduras and Nicaragua joined the United Provinces of Central America. In 1838, the union dissolved and Costa Rica became an independent nation. That same year, Costa Rica and Mexico established diplomatic relations.