[6] And he said unto me, These sayings are faithful and true: and the Lord God of the holy prophets sent his angel to shew unto his servants the things which must shortly be done.
This says that the prophesies are true and God has sent his angle to prepare for them to come true.
Revelation 22:16
[16] I Jesus have sent mine angel to testify unto you these things in the churches. I am the root and the offspring of David, and the bright and morning star.
This again says that Jesus has sent an angel to prepare the world for the prophesies.
Both nations did not want to fight directly because of the threat of a nuclear Holocaust, They were the most powerful nations that spread influence and dominance to surrounding countries and fighting them directly would have started another World war.
The correct answer to this question is D (Northerners became strong opponets of the strengthenied Fugitive Slave Act, which was part of the compromise)