Mexico's President Claudia Sheinbaum clapped back at President-elect Trump on Wednesday and said parts of the U.S. should be called "América Mexicana," in response to Trump's proposal to rename the ...

V. The boundary line between the two Republics shall commence in the Gulf of Mexico, three leagues from land, opposite the mouth of the Rio Grande, otherwise called Rio Bravo del Norte ...

Under the treaty’s terms in 1848, Mexico gave up approximately 525,000 square miles (55% of its prewar territory) in exchange for a $15 million lump sum payment. The U.S. made the Gadsden ...

Polk sent General Zachary Taylor into the still-disputed Texas territory, and the presence of American troops on recently Mexican soil set off a war with Mexico. By 1848, Mexico was defeated and ...