Which title best completes this list?

1. The potential for new markets
2. An abundance of inexpensive farmland
3. The discovery of gold

A. Economic Motives for Passing the Northwest Ordinance
B. Reasons for Issuing the Monroe Doctrine
C. Economic Motives for Manifest Destiny Policies
D. Reasons for the Gadsden Purchase

C. Economic Motives for Manifest Destiny Policies