/u/GeneReddit123's posts
How did ancient societies recognize the legitimacy of slave-ownership claims when foreign visitors brought their slaves with them?
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In String theory, do existing Standard Model elementary particles map 1-to-1 with strings (with only their shape and mode of vibration differing), or does String theory propose some existing elementary particles to be composed of more than one string?
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If electrons move in a copper wire not by each electron travelling all the way, but by bumping into the one ahead and pushing it forward, how can electricity travel faster than the speed of sound of copper?
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The value of convoys to protect merchant ships from submarine attacks was well known in WWI. Why was the lesson forgotten in early WWII?
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Did Columbus really convince his sponsors that the Earth was much smaller than it is, or is it an urban legend?
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Why did Charles de Gaulle support the Referendum of 1969 and resigned in the aftermath of its failure to pass?
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What was it about the 6-5th centuries BC that produced so much ancient philosophical and religious movements in seemingly disconnected parts of the world?
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Why was sieging castles so important in medeival warfare? Why didn't an invading force simply bypass a castle and target cities or other more strategic objectives?
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When, in European history, did "free land" stop being available to those who wanted to settle on it?
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