USA HISTORY

Detailed explanation-1: -Gadsden’s Purchase provided the land necessary for a southern transcontinental railroad and attempted to resolve conflicts that lingered after the Mexican-American War.

Detailed explanation-2: -On December 30, 1853, a treaty was signed where Mexico sold the United States 29, 000 square miles of territory in the area that would eventually become southern Arizona and New Mexico.

Detailed explanation-3: -The Gadsden Purchase is a roughly 30, 000 square-mile region of present-day southern Arizona and southwestern New Mexico that was acquired by the United States in a treaty signed by American ambassador to Mexico James Gadsden on December 30, 1853.

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.