But in the period 3100-2900 BC came a clear and dramatic infusion of Yamna [= Pontic] cultural practice, including burials, into Eastern Hungary and … - Benjamin W. Fortson IV

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But in the period 3100-2900 BC came a clear and dramatic infusion of Yamna [= Pontic] cultural practice, including burials, into Eastern Hungary and along the lower Danube. With this we are able to witness the beginnings of the Indo-Europeanization of Europe.