/u/pineapple3000's posts
During the past century, the population in most industrialized countries has increased, but most of the population has moved to cities, reversing the urban/rural population ratio. Was the population density in many countryside areas actually higher in the first half of the 20th century than now?
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During the Archaic period in Greece, which cities were most powerful? Was it already Athens and Sparta?
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If bitter substances are alkaline and sour substances are acidic, how is it that some substances, like cheap coffee, can be simultaneously bitter and acidic?
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Before the Crusades, was it possible for Byzantines to send letters or written messages to Western Europe?
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