URGENT! Compare and contrast American expansion (growth) in the late 1800's with expansion in the 1900's. (Identify how the expansion efforts were the same and how they were different.)

For centuries Americans had been moving westward and had been developing a continent. The Realization that all the frontier land was gone and since the Civil War there was an incredibly productive industrial complex that Americans had built. This brought a belief that Americans must now move from continental expansion to overseas economic and industrial expansion.

Explanation:

the answer is c     : )

explanation:

i don't have an explanation because i don't know, but i think the answer is c because i googled it and google is right : ) just kidding google isn't allways right but the answer is still c. i hope this !

the correct answer is b