Answer:
The Gadsden Purchase is a 29,670-square-mile region of present-day southern Arizona and southwestern New Mexico that the United States acquired from Mexico by the Treaty of Mesilla, which took effect on June 8, 1854
Explanation:
Gadsden's Purchase provided the land necessary for a southern transcontinental railroad and attempted to resolve conflicts that lingered after the Mexican-American War. ... In 1853, Mexican officials evicted Americans from their property in the disputed Mesilla Valley
