The Yamnaya culture
Steppe herders on wagons whose genes most Europeans carry
From about 3300 to 2600 BC herders of the Pontic–Caspian steppe moved with huge herds in wheeled wagons and buried their chiefs in kurgans, in pits sprinkled with ochre. Genetics shows their descendants spread from the Atlantic to the Altai, leaving a sizeable share of ancestry in almost every European; they probably spoke Proto-Indo-European.
Wikipedia (Russian) · Wikipedia (English) · 33rd century BC
Meanwhile around the world (±25 years)
Asia
- c. 3300 BC The city of Liangzhu — same year