4004 BC

4004 BC redirects here. For more information on 4004 BC, see Ussher chronology. The 5th millennium BC sees the spread of agriculture from the Near East throughout southern and central Europe. Urban cultures in Mesopotamia and Anatolia flourish, developing the wheel. Copper ornaments become more common, marking the Chalcolithic. Animal husbandry spreads throughout Eurasia, reaching China. World population grows slightly throughout the millennium, maybe from 5 to 7 million people.
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