Number one: You're answer is D. The government controlled everything, due to it being Communist.
Number two: The answer is C. When oil lost it's price dramatically, the USSR's economy fell and it could no longer control the Middle East as well as before
Number Three: The answer is A. Socialist republic Russia today isn't officially a communist country. But there are many communist factors, and traits that it is using right now.
Answer:
A. Each branch of government cancheck the power of the other two
They wanted to retain their traditional values.
This is a very difficult question