C and d have to do with the upper classes and how they (mostly) utilized labor. Populists were more concerned with how to make things work for them (a bit cynical on my part).
The progressives (particularly women and labor leaders) were very concerned about working conditions and how to improve them.
B<<<< answer
The answer is D
I hope this helps :)
It is D) 1940. France fell to the Nazis during the Battle of France (1940).
Answer:Same lol, it was good, thanks for asking :P
Explanation: