BJP and Trinamool had strongly opposed the deal in previous cases. The state of Assam also strongly opposed the deal until April 2015, but agreed to control illegal immigration. The border between India and Bangladesh – which is very important for their bilateral relations – has always been difficult to manage, on the one hand, given its length. The main bilateral initiative between Bangladesh and India could be to try to resolve the long-standing border dispute that antled after the 1947 division by the 2015 agreement on subsidies and exchange of enclaves (Chhitmahals) and harmful detentions between the two countries. Nevertheless, the question remains: how far can this agreement and the exchange of enclaves and harmful goods pave the way for the resolution of other unresolved border issues that remain crucial? This document provides an assessment of the current situation after the exchange of enclaves and harmful detentions between India and Bangladesh. The land border agreement was signed on 16 May 1974 between Indira Gandhi and Sheikh Mujibur Rahman, who announced the exchange of enclaves and the surrender of harmful goods.  Under the agreement, India retained the Berubari Union No. 12 enclave, while Bangladesh retained the Dahagram-Angorpota enclaves, with India having access to them by providing a 178-metre by 85-metre corridor (584 feet × 279 feet) called the Tin Bigha Corridor. Bangladesh quickly ratified the agreement in 1974, but India did not. The issue of the undemarcated land boundary of about 6.1 kilometers (3.8 miles) in three sectors – Daikhata-56 in West Bengal, Muhuri River-Belonia in Tripura and Lathitila-Dumabari in Assam – has also not been resolved.
The Tin Bigha corridor was leased to Bangladesh in 1992 against local resistance.   “Issue No. 1748 Land Border Agreement with Bangladesh.” Public Diplomacy Division, Ministry of External Affairs, Government of India, New Delhi, 4 May 2016. www.mea.gov.in/lok-sabha.htm?dtl/26749/QUESTION+NO1748+LAND+BOUNDARY+AGREEMENT+WITH+BANGLADESH. Banerjee called it a historic day for the enclave`s residents and said: “It took a long time – up to 60 years to implement the land border agreement. I am glad that none of the 37,334 landlocked people on the Indian side have left India. A total of 922 residents preferred to come to India. .