3) What did the United States pay to Mexico?

Explanation:

The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico.

Explanation$10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico.

the answer is:

c. economic output

answer; self_ disclosure;