A c and d I think i hope it helps
Answer:
The Catholic Church became very rich and powerful during the Middle Ages. Because the church was considered independent, they did not have to pay the king any tax for their land. Leaders of the church became rich and powerful. Many nobles became leaders such as abbots or bishops in the church.
Explanation:
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They are made up of big groups
The battle of Stalingrad took place in Volgograd, Soviet Union
Answer is D