The answer is B.
Poorer countries are more at risk for communism because it is appealing. After WWII, many Eastern European countries were destroyed, both physically and economically. Because of both their proximity to the ISSR and their poverty, they were likely to join the Communist Bloc. The US wanted to stop this so they gave Mondry to these countries through he Marshall Plan to boost their economic situation.
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I believe it's A.
The Muslims did control Jerusalem for a time, and I believe that they forced the Christians out of it.
Also the Crusaders did sack Constantinople when they were not allowed in by the government there.
I don't know what D is but I'll assume that it is true because I think A is false.
Answer:
whatdo you have any questions