(a) Birhors belong to Jharkhand,found in district of Hazaribagh,Ranchi, Lohardaga, Palamu and Dhanbad. They belong to proton australoid racial stock. Bhutiyapeople belong to Sikkim, they are of the Tibetan origin. Toda tribal people belong to Tamil Nadu, they are a Dravidian ethnic group. Sentineleses belong to Andaman and Nicobar, they are uncontacted tribes live on North Sentinel Island.