Group of leaders......................
At the time the people of Germany were fed up and Hitler rose to power. That was one of the causes. the other one is either C or D.
Congress creates military and funds it but President controls troop movements, only Congress can declare war, but President can start armed conflicts, and "The War Powers Act" limits the President's so he cannot keep troops fighting without Congress' Approval.
A: Trainloads of tourists killed buffalo purely for sport.
The League of Nations was doomed from the moment the US refused to join. That added to the revenge that France and Britain were extracting from the Germans lead to WW2. Wilson's points probably would have worked if they had survived long enough to take hold since he predicted WW2 and this was the only way he could see avoiding it.
