Which of the following was not a reason for united states to look beyond its boundaries in the late nineteenth century?

I think the options are those:

A) to sell surplus goods and procure raw materials
- this is definitely a good reason to look beyond boundaries
B) to provide jobs for its surplus of industrial workers
- well, this did not happen too oftern, but it is also a valid reason

C) to spread Christianity to those it considered inferior
- not an official policy, but i can imagine this

D) to civilize the “inferior races” in Asia and Africa
- same as C.
E) to establish military alliances with other nations
- I think that this is the correct answer. In the 19th Century, the US had a poplicy of non-alignment and non-interventionism, so it avoided military alliances. 

Ok what subject does the question need tone in? thanx