Bangladesh’s inhabitants are Bengalis, who are largely descended from Indo-Aryans who began to migrate into the country from the west thousands of years ago and who mixed within Bengal with indigenous groups of various racial stocks. Ethnic minorities include the Chakma and Mogh, Mongoloid peoples who live in the Chittagong Hill Tracts District; the Santal, mainly descended from migrants from present-day India; and the Biharis, non-Bengali Muslims who migrated from India after the partition.