Millennia: | |
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Centuries: |
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The Stone Age |
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↑ before Homo (Pliocene) |
↓ Chalcolithic |
↑ before Homo (Pliocene)
The 9th millennium BC marks the beginning of the Neolithic period.
Agriculture spread throughout the Fertile Crescent and use of pottery became more widespread. Larger settlements like Jericho arose along salt and flint trade routes. Northern Eurasia was resettled as the glaciers of the last glacial maximum retreated. World population was at a few million people, likely below 5 million.