The Insane Complexity of the India/Bangladesh Border

The Bangladesh–India border, known locally as the International Border, is an international border running between Bangladesh and India that demarcates the eight divisions of Bangladesh and the Indian states.
They share a 4,096-kilometre-long (2,545 mi) international border, making it the fifth-longest land border in the world, including 262 km (163 mi) in Assam, 856 km (532 mi) in Tripura, 318 km (198 mi) in Mizoram, 443 km (275 mi) in Meghalaya, and 2,217 km (1,378 mi) in West Bengal.
But what makes the border so complicated it the dispute between the two countries. The origin of the dispute can be traced back to the Treaty of Friendship, Cooperation and Peace signed by then Indian Prime Minister Indira Gandhi and Bangladesh’s founding leader and Prime Minister Sheik Mujibur Rahman on 19 March, 1972.