New thought: Development of cities from 3700 BC – 2000 AD. With each cluster of new cities (populations centers) forming, you’ll find corresponding developments in society, technology, literature, _something_ happening within a few generations of those cities being formed. https://www.youtube.com/watch?v=yKJYXujJ7sU

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New thought:
Development of cities from 3700 BC – 2000 AD. With each cluster of new cities (populations centers) forming, you’ll find corresponding developments in society, technology, literature, _something_ happening within a few generations of those cities being formed.
https://www.youtube.com/watch?v=yKJYXujJ7sU
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