Yamnaya people are widely considered the likely carriers of Proto-Indo-European (PIE), the ancestral language of Sanskrit and many other Indo-European languages. Genetic and archaeological evidence links the Yamnaya culture (c. 3300–2600 BCE) of the Pontic-Caspian steppes (modern-day Ukraine and southern Russia) to the spread of Indo-European languages across Europe and South Asia.
Sanskrit’s origins are tied to the broader Indo-European language family, which likely emerged from PIE spoken by Yamnaya pastoralists.
Ancient DNA studies show that populations in India today carry significant "steppe ancestry" linked to the Yamnaya, supporting the theory that Indo-European languages, including Sanskrit, arrived via migrations from the Eurasian steppes.
The Yamnaya migration (starting ~3100 BCE) brought advanced technologies like horseback riding and wheeled vehicles, enabling rapid expansion into Europe and Central Asia, where their language evolved into regional branches, including the Indo-Iranian group that gave rise to Sanskrit.
Some recent studies (e.g., in Nature, 2025) suggest that Sanskrit did not originate in India, but rather its linguistic roots trace back to the Yamnaya-speaking peoples of the steppes, challenging older theories of an indigenous Indian origin.
While Sanskrit developed in India over millennia, its linguistic roots are now believed to lie in the Yamnaya culture, not in India itself
https://en.wikipedia.org/wiki/Indo-Aryan_migrations
https://en.wikipedia.org/wiki/Medieval_India
https://en.wikipedia.org/wiki/Yamnaya_culture
https://en.wikipedia.org/wiki/Kurgan_hypothesis
https://en.wikipedia.org/wiki/Historical_Vedic_religion
Scheme of Indo-European language dispersals from c. 4000 to 1000 BC according to the Kurgan hypothesis. Center: Steppe cultures
1: Anatolian languages (archaic PIE)
2: Afanasievo culture (early PIE)
3: Yamnaya culture expansion (Pontic-Caspian steppe, Danube Valley) (late PIE)
4A: Western Corded Ware
4B: Bell Beaker culture (adopted by Indo-European speakers)
4C: Bell Beaker
5A-B: Eastern Corded ware; 5C: Sintashta culture (proto-Indo-Iranian)
6: Andronovo
7: Indo-Aryans (A: Mittani; B: India)
8: Greek
9: Iranian
Proto-Balto-Slavic
Not shown: Armenian, expanding from western steppe