USA HISTORY

Detailed explanation-1: -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.

Detailed explanation-2: -This changed on February 2, 1848, when the United States and Mexico signed the Treaty of Guadalupe Hidalgo, ending the two-year-long Mexican-American War. In exchange for peace, Mexico ceded nearly 950, 000 square miles – almost half of its territory – to the United States.

Detailed explanation-3: -The Treaty of Guadalupe Hidalgo, which brought an official end to the Mexican-American War (1846-48), was signed on February 2, 1848, at Guadalupe Hidalgo, a city to which the Mexican government had fled with the advance of U.S. forces.