Уральцы были круче ИЕйцев?
The Fatyanovans are Proto-Indo-Iranians.
1. Fatyanovo culture is a part of Corded Ware Culture (Oka-Volga rivers) about 5000-4200 years ago
2. The basis of men of Fatyanovans are men from R1a-Z645-Z93.
3. Men R1a-Z645-Z93 left Fatyanovo to the east to Andronovo-Sintashta and after invention of chariots spread all over Asia (Andronovo expansion)
4. Some descendants of Fatyanovo R1a-Z645-Z93-L657 (this is about 30-60% of modern Brahmans, a large number of Jats, former Kshatriyas), and other descendants of Fatyanovo R1a-Z645-Z93-Z2124 (this is about 40% of burials in Scythian-Sarmatian mounds, as well as many modern speakers of Iranian languages).
5. The divergence of the Balto-Slavic and Indo-Iranian branches occurred about 4200 years ago (Kasyan's work, 2021) just at the time of the departure of the Fatyanovans (R1a-Z645-Z93) from the Russian Plain.
6. The major branch of the modern Balto-Slavs related to the Fatyanovans as fraternal is R1a-Z645-Z283. These men also lived in Corded Ware in the neighborhood of the Fatyanovans in the Eastern Baltic.
7. The significant number of Proto-Indo-Iranian loanwords in the Uralic languages, also indirectly testifies to the interaction between the Fatyanovans (R1a-Z645-Z93) and the arrived inhabitants of the Netted Ware Culture (probable Uralic people from haplogroup N1).
We can see the reasons in the languages of both peoples:
Proto-Uralic - *hugrás (strong) - as a self-designation of one of the Ural branches
Sanskrit - उग्र ugrá (strong, fury)
Avestan - ugra (strong, fury)
Proto-Uralic - *orja (slave, servant, southerner)
Proto-Indo-Iranian - *Áryas - as a self-designation of proto-Indo-Iranians
https://sanat.csc.fi/wiki/EVE:orja8. The departure of the Fatyanovans (R1a-Z645-Z93) from the Russian Plain was probably connected with the arrival of the Uralians (N1) to the Russian Plain.
Military clashes between Proto-Indo-Iranians (R1a-Z645-Z93) from Fatyanovo and Proto-Uralians (N1) from Netted Ware Culture are also seen in archaeology (Numerous skeletons from Fatyanovo-Balanovo cemeteries show evidence of injury, including broken bones and smashed skulls).
Conclusion: Pressure from new Uralic migrants (N1) most likely forced the Proto-Indo-Iranians (R1a-Z645-Z93) to leave Fatyanovo for Andronovo-Sintashta.