The Indo-European migrations are hypothesized migrations of peoples who spoke Proto-Indo-European and the derived Indo-European languages, which took place from around 4000 to 1000 BCE, explaining how
Scheme of Indo-European language dispersals from c. 4000 to 1000 BCE according to the widely held Kurgan hypothesis: Center: Steppe cultures 0 Urheimat 1 (black): Anatolian languages (archaic PIE) 2 (black): Afanasievo culture (early PIE) 3 (black): Yamnaya culture expansion (Pontic-Caspian steppe, Danube Valley; late PIE) 4A (black): Western Corded Ware 4B-C (blue and dark blue): Bell Beaker; adopted by Indo-European speakers 5A-B (red): Eastern Corded ware