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by Mikeb85 1683 days ago
We do know the climate changed significantly.

Homo sapiens moving northward did coincide with the end of the last glacial period.

https://en.m.wikipedia.org/wiki/Last_Glacial_Period

> When the glaciation event started, Homo sapiens was confined to lower latitudes and used tools comparable to those used by Neanderthals in western and central Eurasia and by Denisovans and Homo erectus in Asia. Near the end of the event, H. sapiens migrated into Eurasia and Australia.