Ethnic groups in the Chittagong Hill Tracts
The Chittagong Hill Tracts is a region consisting three hilly districts of the south-eastern part of Bangladesh – Khagrachari, Bandarban, and Rangamati – adjoining international boundaries with Myanmar on the southeast, the Indian states of Tripura on the north and Mizoram on the east. It is a extensively hilly area and home to a variety of tribal peoples in the country, which makes up almost 49% of the total population of the region.
Source: Wikipedia — Ethnic groups in the Chittagong Hill Tracts (CC BY-SA 4.0)