Yamna culture – Wikipedia
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The Yamna people or Yamnaya culture (traditionally known as the Pit Grave culture or Ochre Grave culture) was a late Copper Age to early Bronze Age culture of the region between the Southern Bug, Dniester and Ural rivers (the Pontic steppe), dating to 3300–2600 BC.[2] The Yamna culture is identified with the late Proto-Indo-Europeans, and is the strongest candidate for the Urheimat (homeland) of the
Proto-Indo-European language.
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They are also closely connected to later, Final Neolithic cultures which spread throughout Europe and Central Asia, especially the Corded Ware people, but also the Bell Beaker culture as well as the peoples of the Sintashta, Andronovo, and Srubna cultures. In these groups, several aspects of the Yamna culture (e.g., horse-riding, burial styles, and to some extent the pastoralist economy) are present. Genetic studies have also indicated that these populations derived large parts of their ancestry from the steppes.[3][6][7][8]
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https://en.m.wikipedia.org/wiki/Yamna_culture