Karl Marx once said; "I am not a Marxist!". He also once called his adherents "useful idiots". Karl Marx presented a strategy in communism much of which can be found in his book, Das Kapital.
I hope I was able to help <3
For the allied European countries, the economic hardships following World War One resulted from destroyed industry and depleted resources. Hope this helped!
not B, I think either A or D
