Explanation:

Prehistoric Acheulian tools dating to Lower Paleolithic era have been discovered in various places in the region, implying an early settlement by humans.Kalinga has been mentioned in ancient texts like Mahabharata, Vayu Purana and Mahagovinda Suttanta. The Sabar people of Odisha have also been mentioned in the Mahabharata.Baudhayana mentions Kalinga as not yet being influenced by Vedic traditions, implying it followed mostly tribal traditions.