Indigenous Aryanism, also known as the Indigenous Aryans theory (IAT) and the Out of India theory (OIT), is the conviction that the Aryans are indigenous to the Indian subcontinent, and that the Indo-European languages radiated out from a homeland in India into their present locations. It is a "religio-nationalistic" view on Indian history, and propagated as an alternative to the established migration model, which considers the Pontic–Caspian steppe to be the area of origin of the Indo-European languages.
According to Allentoft (2015), the Sintashta culture probably derived from the Corded Ware Culture. The Sintashta Culture is commonly thought to be the first manifestation of the Indo-Iranians.
Indo-Iranian migrations according to Kazanas.
The Indo-Aryan migrations were the migrations into the Indian subcontinent of Indo-Aryan peoples, an ethnolinguistic group that spoke Indo-Aryan languages. These are the predominant languages of today's Bangladesh, Maldives, Nepal, North India, Eastern Pakistan, and Sri Lanka.
Scheme of Indo-European language dispersals from c. 4000 to 1000 BCE according to the widely held Kurgan hypothesis. – Center: Steppe cultures 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 & dark blue): Bell Beaker; adopted by Indo-European speakers 5A-B (red): Eastern Corded ware
A 1910 depiction of Aryans entering India, from Hutchinson's History of the Nations
An early 20th century depiction of Aryans settling in agricultural villages in India
According to Allentoft (2015), the Sintashta culture probably derived from the Corded Ware Culture.
