As far as I know the ‘Collapse’ model is correct: civilizations expand – like all human opportunities – until the underclasses, now enabled, conquer them. This is true for 3500 bc, 1200bc, 400ad, and 1900ad.
As far as I know the ‘Collapse’ model is correct: civilizations expand – like all human opportunities – until the underclasses, now enabled, conquer them. This is true for 3500 bc, 1200bc, 400ad, and 1900ad.
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