How did alliances contribute to the start of World War I? Alliances made it easier for nations to negotiate peace treaties. Because of alliances, fewer nations needed to participate in the war. Alliances required nations to defend each other against aggression. A set of alliances helped nations respond peacefully to problems.

The system of checks and balances ensures that

The holocaust of world war ii resulted in a) the nazis effectively used propaganda to gain and hold power in germany. b) ethnic regimes carried out mass devastation. c) deporting all european jews to the island of madagascar. d) the systematic mass slaughter of european jews and and others in nazi concentration camps during world war ii.

Why did roosevelt support a europe first strategy even though it had been japan that had first attacked the us