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The Roman Republic lasted about 480 years, and the Empire another 700. The Egyptian civilization lasted some three thousand years. The Islamic Caliphate about 1300 or so years. The Greeks lasted some 650 years. Where did this interesting "average" come from?
Yeah, but they were killing people willy-nilly so people were kept in check.
Yeah, but they were killing people willy-nilly so people were kept in check.
So where did his 200 year average come from?
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