jan 1, 3200 BC - Yamnaya Culture appears.
Description:
The Yamnaya culture appears on the Pontic–Caspian steppe. They most likely spoke the Proto-Indo-European language and may have been responsible for domesticating the horse, initiating the Indo-European migrations after a period of European population decline opened up areas for settlement, and both evolving and spreading the European alleles for lactase persistence.
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