/u/AbouBenAdhem's posts
Will people who have recovered from Covid-19, and are (hopefully) resistant and non-contagious, show up as positive or negative on the tests currently being performed?
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Was Rome the only ancient empire that was still considered to be the same state after a succession of unrelated dynasties?
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Was the three-field system developed independently in ancient China and medieval Europe, or did it spread via farmers in Central Asia and the Middle East?
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