Answer: Purnia
Notes: Purnia division, established in 1990, consists of Purnia, Katihar, Araria, and Kishanganj. It has the highest Muslim population percentage in Bihar at 45.93%, far above the state average of 16.86%. The region has notable historical and cultural significance within Bihar.
📌 Question Number: 88 in Demography, Tribes, Census and Society of Bihar in the above course in App.