Answer:
1. placed under house arrest during a coup by high-ranking members of his own government
2.. He could fall either because of pressure from the military, who are very discontented with Gorbachev, or he could fall as a result of popular protests
3.He was elected the leader of (still) Soviet Russia (not the whole of USSR) based on anti-soviet populism, then worked actively to dissolve the USSR in order to become the ruler of a sovereign nation as opposed to only a part of it.
4.wars
Explanation: