Why was the United States willing to pay more per mile for the Gadsden Purchase than for the Mexican Cession? A-The land may have been small, but it completed the state of Arizona. B-The United States wanted to prevent clashes along the southern border. C-The Gadsden Purchase gave the United States land to build a railroad. D-The United States paid more money to make amends with Mexico.

Sagot :

C. The Gadsden Purchase gave the United States land to build a railroad. 

At the time, America was expanding the railroads from east coast to west coast, and the land in the Gadsden Purchase was prime land for railroads that the United States government wanted. 
The correct choice is C. The Gadsden purchase gave the United States land to build a railroad.