Every great leap in genetic evolution (european and east Asian) is subject to de

Every great leap in genetic evolution (european and east Asian) is subject to decline by hybridization (India, Persia, North Africa, Balkans) when the urge to expand profits overcomes the urge for self-defense against hybridization. The differences between civs are genetic. https://twitter.com/curtdoolittle/status/1326939499318956033