Where did the tribe aryan who migrated from northern India 3500 years ago come from?

The Aryan tribe that migrated from northern India around 3500 years ago is believed to have originated from the Eurasian Steppe, particularly the region around the Caucasus Mountains and southern Russia. This migration is part of the larger Indo-European expansion. The Aryans brought with them linguistic, cultural, and technological innovations that significantly influenced the Indian subcontinent. Their arrival marked the beginning of significant social and cultural developments, including the formation of early Vedic society.