The term tribal defies any universal definition. Between the Maoris of New Zealand, the Aborigines of Australia and the Indigenous People of North America, there is a shared historical fact. They were all there before the colonial powers pushed them to margins. This is not so in the case of all tribal communities in India.
Some of the Indian tribes such as the Onges and the Jarawas of Andaman and Nicobar Islands have been entirely indigenous. Some others like the Banjaras in Western and Central India and the Gujjars in the Himalayas have been nomadic. And, some, such as several sub-groups of Bhills, have migrated in various historical phases to their present geographical locations. The stories of migration of such communities are found in their oral traditions. The diverse histories of tribes in India are seen among the ?Particularly Vulnerable Groups? as well. The term ?primitive? used for them at one time has fortunately been declared as pejorative.
- See more at: http://indianexpress.com/article/opinion/columns/asur-tribe-struggle-for-survival-not-of-faith/#sthash.PYWVKVfW.dpuf