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From province to province there are many such races as original inhabitants. Like Rajputs in Rajasthan, gond, bhil, kol, kirat, baiga, tribes in Madhya pradesh, Chhatisgarh, bhoomihar in Bihar, near rivers are manjhi, kewat, kahar, sondhia, raikwar, chamar, dhobis, basor etc. Dravids in south in plenty. There too many as original inhabitants; and now you can not form any notion from their surnames.