Can you send me some of the choices
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.
B. Increased production and consumption lead to lower prices
I'm not sure if you want only one, which it can't be only one of those so, here:
A. Slavic People
C. Turkish Muslims
D. Non-Slavic Europeans
I hope that this helps.