USA HISTORY

Detailed explanation-1: -The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29, 670 square mile portion of Mexico that later became part of Arizona and New Mexico.

Detailed explanation-2: -The purpose of this purchase by the U.S. government was largely to extend a southern railroad from the Atlantic to the Pacific Ocean. At the time the area of the purchase was thought to have the best route for a transcontinental railroad. The purchase added the Mesilla Valley to the United States.

Detailed explanation-3: -The Arizona cities of Tucson and Yuma are on territory acquired by the U.S. in the Gadsden Purchase. The financially strapped government of Santa Anna agreed to the sale, which netted Mexico $10 million (equivalent to $240 million in 2021).

Detailed explanation-4: -In 1853 President Pierce sent Gadsden to Mexico to negotiate a redefinition of the border. The Mexican regime was urgently in need of money and for $10 million sold the required strip of territory south of the Gila River, in what is now southern New Mexico and Arizona.

Detailed explanation-5: -This treaty, signed on February 2, 1848, ended the war between the United States and Mexico. 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.