World Issues - World War II and its impact on the the world afterwards.....?

These are the only questions that I am really iffy on and am not too sure what to say: Explain what propaganda is and how it was used during WWII. (Think films shown to soldiers and the American People) Explain how the world changed after WWII by referring to the holocaust, nuclear weapons, and the League of... show more These are the only questions that I am really iffy on and am not too sure what to say:

Explain what propaganda is and how it was used during WWII. (Think films shown to soldiers and the American People)

Explain how the world changed after WWII by referring to the holocaust, nuclear weapons, and the League of Nations.

Could WWII have been prevented: When and what would it have taken to do so?

Thank you so much in advance for your help! It is much appreciated!
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