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So, I'm currently doing research for a TL I've been mulling over, where the POD is in 271 (Aurelian being killed in a Juthungi ambush - see this thread if you're curious). Realizing that the world is bigger than Europe and the Middle East, I've been reading up on East Asian history around this time. The issue of butterflies inevitably emerged.
To give an example, how would you handle the expansion of Goguryeo? IOTL it happened under Gwangaeto the Great, who was born in 374 - over a hundred years after the POD. Genetics is a famously fickle bitch, and it seems very implausible that a perfect clone would be born in a world with a century of divergent history. Still, Korea is far away. How fast do you see the causal ripples spreading? Should I re-roll all the dice in Goguryeo the moment Aurelian bites the dust? If not then, when?
Help from more experienced alt-historians very much welcome!