Answer:
The following are the points
Step-by-step explanation:
1-Rise of Dictatorships: After the war, some countries had leaders who had total control and suppressed opposition. The leaders were aggressive and nationalist
2-Lack of Measures: There weren't strong systems in place to prevent conflicts or keep everyone safe. Aggressive actions by nations went unchecked because there wasn't a good way to stop them.
3-Weak International Organization: The League of Nations was created after the war to keep peace, but it faced difficulties.