The list of enclaves was drawn up by both countries in 1997. Two joint boundary working groups were formed in 2001 to elaborate the details of the enclaves. A joint census was conducted in May 2007. In September 2011, India signed the Additional Protocol to the 1974 Border Agreement with Bangladesh. [18] The two nations announced plans to trade 162 enclaves to give residents the choice of nationality. [19] [20] [21] According to popular legend, enclaves were used centuries ago as bets in card or chess games between two regional kings, the Raja of Koch Bihar and the Maharaja of Rangpur. [3] As far as historical records are concerned, the small territories seem to be the confusing result of a 1713 contract between the Kingdom of Koch Bihar and the Kingdom of the Magnates. The kingdom and the tycoons may have ended a war without setting a limit for the territories gained or lost. The territories of Assam, West Bengal, Tripura and Meghalaya are included in the invoice. Neelam Deo, director of Gateway House, comments on the historic agreement. Article 3 of the AMLA provides that, when laying down zones, the inhabitants of those zones have the right to reside where they are located, as nationals of the State to which the territories are transferred.

. . .