The Indo-Aryans were a group of people who spoke an Indo-European language and migrated to the Indian subcontinent from Central Asia around 1500 BC. They are believed to have originated from the region north of the Black and Caspian Seas, and their migration is thought to have been part of a larger movement of peoples known as the Indo-European migrations. The Indo-Aryans settled in the Indus Valley and the Gangetic Plain, and their culture and language had a profound impact on the development of Indian civilization.