The 100th Constitutional Amendment Act, 2015 implemented the historic Land Boundary Agreement (LBA) between India and Bangladesh, enabling the exchange of enclaves (pockets of one country's territory inside another) and resolving a border dispute that had lasted for over 60 years since partition.
The world's most complex enclave situation existed at Dahala Khagrabari โ a piece of India inside Bangladesh, inside India, inside Bangladesh โ making it a third-order enclave, one of the rarest geographical features on Earth. It was merged into Bangladesh in 2015.
The 100th Amendment to the Indian Constitution:
After the 1947 Partition, both India and East Pakistan (later Bangladesh) were left with hundreds of tiny enclaves โ small pockets of one country's territory completely surrounded by the other country's land.
For 68 years, these residents could not vote, own property legally, or access basic services.
Under PM Narendra Modi (India) and PM Sheikh Hasina (Bangladesh):
**Article 1** defines India as 'a Union of States' and specifies the territories. Constitutional amendments involving territory acquisition or cession require a special majority under **Article 368** plus ratification by at least half the state legislatures.
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