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By this, I mean more modern-day civilizations/nations that can be traced more-or-less directly to ancient civilizations while keeping more-or-less the same basic internal structures (i.e. China or Thailand up to the 20th century). I'm looking for, basically, a present-day Indus Valley civilization that directly traces itself back to Harappa and its ilk, and perhaps some independent non-Indo-European civilizations in Europe. A continuing Kurgan culture in eastern Europe would be very cool, though I'm not sure we know enough about them to even posit a POD.
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