The answer is B, to annex new slave states.
Making Christianity as the main religion of Rome was one of the factors that led to the downfall of the empire. The emperor was regarded as one of the gods before Christianity came then the aftermath of the change of religion made the emperor not credible to his own people. Rome was also headed by incompetent leaders both in the military and government. Then the divided empire was overthrown by barbaric tribes.
Answer is in the file below
tinyurl.com/wpazsebu
I don't actually know this. But, I think that it was Lincoln. Then the Amenstapation proclamation was created. BTW, I probably spelt Amenstapation wrong.