I never reviewed this in class but I do remember that my teacher said that Rome had a strong army. I know its not B, C, and I don't think its D.
Hopefully this helped you.
Before the revolution there were three estates(societies) the First (clergy); the Second nobility); and the Third (commoners). Of course like it is now, the poor commoners paid the most taxes. Upper clergy and nobility paid nothing or close to it. The king was not considered part of any estate. Of course the commoners eventually rebelled
Now, up until just before the U.S. declared war on April 6th, 1917, the U.S. had desperately tried to stay neutral, but ties to Britain, propaganda, the sinking of ships by German U-boats, and a German attempt in the Zimmermann Note to get Mexico to declare war on the U.S. pushed the U.S. to getting involved.
