What role do themes play in historians' efforts to organize information about
the past?

historians to compare seemingly unrelated societies based on a single important idea

Explanation:

Themes is a way to organise information about societies, because in history there's too much information to process at once. So, in order to achieve some aims and do comparison between, you need to segment it.

allow historians to compare seemingly unrelated societies based on a single important idea. Explanation: Themes is a way to organise information about societies, because in history there's too much information to process at once. So, in order to achieve some aims and do comparison between, you need to segment it

Explanation:

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-he wants to reinforce that students and teachers still have their first amendment rights during the school day.

i think economic depression and disrupted trade and commerce