On May 16, 1974, Indira Gandhi and Sheikh Mujibur Rahman signed the Land Boundary Agreement between India and Bangladesh. It was not carried out for decades. In 2011 the two governments added a protocol. In May 2015 Parliament passed the 100th Amendment to the Constitution to put the agreement into effect.
At midnight on July 31, 2015, the two countries exchanged their enclaves. India transferred 111 enclaves to Bangladesh and received 51.