srry im late...................
Answer:
C.Because the Constitution doesn't clearly distinguish the powers and responsibilities of the vice president
DBecause the Constitution doesn't say what to do if the president is ill, wounded, or mentally unfit for the job
Explanation:
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.
The Catholic Church suppressed many ideas of the Scientific Revolution and they even excommunicated Galileo for saying that the earth revolved around the sun