Which of the following explains a connection between the ability of Americans to gain access to natural resources in the early 1800s and in the late 1800s?

In both periods, the expansion of power over western North America gave the United States control over more natural resources.
A

In both periods, the United States imported more natural resources after claiming overseas colonies through the Monroe Doctrine.
B

In both periods, the United States acquired more natural resources by increasing peaceful trade with American Indian groups.
C

In both periods, the forced migration of enslaved people provided labor for extracting natural resources in United States mining towns.
D