The best option as to what shift has occurred as a result of the collapse of the Soviet Union is "a shift from government-owned to privately-owned business," although it should be noted that this is a bit of a simplification.
Answer:
Economic depression is a sustained, long-term downturn in economic activity in one or more economies. (no money to pay taxes) It played in the part of Shay's Rebellion because Shay and the farmers didn't want to pay taxes that made them struggle so they rebelled.
If you're talking about WW2, it's the battle of Stalingrad.
If it's about WW1, it would probably be Verdun.
The three branches of government: the judicial, executive, and legislative branch. Not one branch can have too much powerful, which can be seen with the checks and balances each branch has over the other.
