Complex sentence: The Tanchangya (তঞ্চংগ্যা) people are an indigenous people in southeastern Bangladesh, one of 13 indigenous ethnic communities living in the Chittagong Hill Tracts (CHT) among the 45 ethnic communities in Bangladesh.
Split into simpler sentences: The Tanchangya (তঞ্চংগ্যা) people are an indigenous people in southeastern Bangladesh. There are 13 indigenous ethnic communities living in the Chittagong Hill Tracts (CHT) among the 45 ethnic communities in Bangladesh.