Migration theories

Indo-Aryan migration models[note 1] discuss scenarios around the theory of an origin from outside South Asia of Indo-Aryan peoples, an ascribed ethnolinguistic group that spoke Indo-Aryan languages, the predominant languages of North India. Proponents of Indo-Aryan origin outside of South Asia generally consider migrations into the region and Anatolia (ancient Mitanni) from Central Asia to have started around 1500 BCE, as a slow diffusion during the Late Harappan period, which led to a language shift in northern South Asia. The Iranian languages were brought into Iran by the Iranians, who were closely related to the Indo-Aryans.