The Prime Ministers of India and Bangladesh signed the Land Boundary Agreement in 1974 to exchange enclaves and simplify their international border. A revised version of the agreement was adopted by the two countries on 7 May 2015, when the Parliament of India passed the 100th Amendment to the Constitution of India."The Constitution (119th Amendment) Bill, 2013" PRS India. Retrieved 10 May 2015. Under this agreement, which was ratified on 6 June 2015, India received 51 Bangladeshi enclaves (covering ) in the Indian mainland, while Bangladesh received 111 Indian enclaves (covering ) in the Bangladeshi mainland. The enclave residents were allowed to either continue residing at their present location or move to the country of their choice. The exchange of enclaves was to be implemented in phases between 31 July 2015 and 30 June 2016. The enclaves were exchanged at midnight on 31 July 2015 and the transfer of enclave residents was completed on 30 November 2015. After the Land Boundary Agreement, India lost around to Bangladesh.
