Question

On December 30, 1853, the United States signed a treaty with Mexico to purchase around 30,000 square miles of land in present day southern Arizona and New Mexico. This purchase helped in completing the Southern Pacific Railroad that connected the southern region to the Pacific coast. What additional impact did this purchase have?

Intercontinental trade in the southern region flourished after completion of the railroad.

The border dispute between the United Sates and Mexico was resolved.

The migration of people from the southern region to the Pacific coast almost stopped.

The northern region witnessed rapid industrialization and connectivity.

Answer 1

The border dispute between the United States and Mexico was resolved.

Explanation: The Gadsden Purchase (1853) settled the remaining boundary issues left after the Treaty of Guadalupe Hidalgo and established the final contiguous U.S.–Mexico border in that region, in addition to providing land for a southern transcontinental railroad.