<span>Carnegie invested in the Frick Coke Company because the Frick Coke Company is his main supplier of coke coal.</span>
I believe that the United States had no imperialistic motives for entering WWII. Because Great Britain, Russia, and Germany all used to be empires at some point in their history, and they might have wanted to become empires again, whereas America had no such wishes.
Answer:
A) the industrial revolution
I think it is D but I could be wrong.