/u/AntsLiterallyOnFire's posts in /r/askhistorians
In a map from the early 1920’s, Yemen is depicted as being in a seemingly different place than today. Not as though it lost or gained territory but rather as if it has just picked up and walked somewhere else. What events led to this drastic change?
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How were time zones developed? How long have people understood that it could be both day and night at the exact same time in different parts of the world?
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