Map of Land Affected by the Treaty
Treaty of Guadalupe Hidalgo was signed in 1848, ending the war between Mexico and the United States. In return for fifteen million dollars from the United States, Mexico gave up the land that became California, Nevada, Utah, and parts of Arizona, Wyoming, Colorado, Kansas, Oklahoma, and New Mexico. Texas also became part of the United States.
Mexican American War
United States declared war on Mexico in 1846. However, General Zachary Taylor had crossed the border and established a fort several months before. The Treaty of Guadalupe Hidalgo, signed on February 2, 1848, ended the war. Lands gained by the United States included California, Nevada, Utah, and parts of Arizona, New Mexico, Colorado, and Wyoming. The Gadsden Purchase, finalized on December 30, 1853, bought more land from Mexico that is today Arizona and New Mexico.