Why did the united states remain neutral during the french revolution?
the congress voted to remain neutral.
the pinckney treaty prevented america from becoming involved.
the army was too weak to participate in the war.

the three answers (for plato at least) are:

b-condemned sola fida 

d-set rules for establishing seminaries and for educating clerics in the seminaries 

f-recommended moderation in the sale of indulgences and banned the sale of false indulgences 

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.