Signing of Treaty of Guadalupe Hidalgo

Date: February 2, 1848 • Location: Ciudad de México, Mexico

Mexican–American War: During the American occupation of Mexico City, diplomats signed the Treaty of Guadalupe Hidalgo, which ended the war and had Mexico cede 1.36 million square kilometres (530,000 sq mi) of territory and the United States pay US$15 million.

The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the United States intervention in Mexico, was an invasion of Mexico by the United States. It followed the 1845 American annexation of Texas, which Mexico still considered its territory because it refused to recognize the Treaties of Velasco, signed by President Antonio López de Santa Anna after he was captured by the Texian Army during the 1836 Texas Revolution. The Republic of Texas was de facto an independent country, but most of its Anglo-American citizens who had moved from the United States to Texas after 1822 wanted to be annexed by the United States.