Was Sanskrit developed by the Indo-Aryans?

Yes, Sanskrit is believed to have been developed by the Indo-Aryans, who were a group of people that migrated into the Indian subcontinent around 1500 BCE. Sanskrit is considered to be one of the oldest and most complex languages in the world, and it was used as a language of religion, philosophy, and literature in ancient India. The Indo-Aryans are also credited with introducing many other cultural and religious practices to the Indian subcontinent, including the caste system and the Vedic religion.