Because belonging to the church (being a church official such as a priest or a bishop) esentially meant you were given education (not common or at all present in those times) and a good position with a pay. You also exerted a lot of power in your local or regional community as church officials were considered to have been influential figures in medieval ages.
Germany offered to give Mexico most of there land back from the United States. But that plan completely backfired causing tons of problems through out the war.
The answer is “D”
Hope this help.
b is the answer to the first one
c is the answer to the second one