How tenable is the Aryan Migration Theory (Indo-European migration into the Indian subcontinent around 2000 B.C.)? Does the evidence prove it, disprove it, or is it as yet inconclusive?
https://www.reddit.com/r/AskHistorians/comments/6ju3vy/how_tenable_is_the_aryan_migration_theory/Indo-Aryan migrations - Wikipedia
https://en.wikipedia.org/wiki/Indo-Aryan_migrations