The first cities and states arose 5,000 years ago. One of these archaic states, the Old Kingdom of Egypt {2650–2150 BCE}, the one that built the Great Pyramid of Giza, had a population of between one and two million, which is beginning to approach the social scale of the most complex social insects, ants and termites. The"
( Peter Turchin )
[ Ultrasociety: How 10,000 Years ]
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