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: -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-3: -Connecting the two American coasts made the economic export of Western resources to Eastern markets easier than ever before. The railroad also facilitated westward expansion, escalating conflicts between Native American tribes and settlers who now had easier access to new territories.