The Treaty of Guadalupe Hidalgo, which brought an official end to the Mexican-American War (1846-48), is signed at Guadalupe Hidalgo, a city to which the Mexican government had fled with the advance of U.S. forces.
By its terms, Mexico ceded 55 percent of its territory, including the present-day states California, Nevada, Utah, New Mexico, most of Arizona and Colorado, and parts of Oklahoma, Kansas, and Wyoming. Mexico also relinquished all claims to Texas, and recognized the Rio Grande as the southern boundary with the United States.
