 Chutias are inhabitants of Upper Assam who established political power in Sadiya and adjoining areas falling within modern Arunachal Pradesh.Birpal was one of the numerous Chutia chieftains who ruled present-day Upper Assam and Arunachal Pradesh.Over the years he and his successors united all the Chutia kings of Assam and Arunachal Pradesh in the hills and plains to form the Chutia kingdom .