How did India and Bangladesh settle their border in 2015?

Imagine a home legally in India but surrounded on every side by Bangladesh. Reaching the government responsible for that home would mean crossing another country. This was a problem of access to administration as well as a puzzle on a map.

What was an enclave?

It was a territorial pocket cut off from the rest of its country by the other country's territory. An Indian enclave in Bangladesh remained Indian territory before the exchange even though Bangladesh surrounded it. A Bangladeshi enclave in India presented the reverse arrangement.

The Ministry of External Affairs' booklet describes the resulting difficulties in legal rights and access to schools, health services and electricity. Calling everyone legally “stateless” would go beyond that account. The precise problem was that formal territorial affiliation and practical access to a government did not fit together.

An enclave was also different from an area in adverse possession. The latter involved a mismatch between the documented boundary and actual administration. The 2011 Protocol addressed both, using different arrangements.

Why did it take three legal stages?

Because an international agreement, domestic constitutional authority and actual implementation do different jobs. The 1974 agreement, signed on 16 May, set out the approach to the land boundary. Its 2011 Protocol, signed on 6 September, addressed the remaining undemarcated segments, enclaves and adverse possessions.

India then needed constitutional authority for the territorial transfers. The Constitution (One Hundredth Amendment) Act received presidential assent on 28 May 2015. It amended the First Schedule's descriptions of the territories of Assam, West Bengal, Meghalaya and Tripura to give effect to the acquired and transferred areas specified in its schedules.

The amendment's Third Schedule reproduces the relevant agreement and protocol extracts. It is useful primary evidence: the statute itself connects the constitutional change to the diplomatic texts. The exchange of instruments of ratification took place in Dhaka on 6 June 2015; the enclave transfers followed at midnight on 31 July.

This is why the Article 3 procedure for reorganising states is not the whole answer. Changing an internal state boundary and transferring territory to another sovereign country raise different constitutional questions. The Supreme Court's Berubari opinion (1960), as restated in later judgments, required a constitutional amendment for cession; a genuine boundary ascertainment without cession is a different category.

What exactly was exchanged?

The enclave component transferred 111 Indian enclaves, covering 17,160.63 acres, to Bangladesh. India received 51 Bangladeshi enclaves, covering 7,110.02 acres. The direction matters: “Indian enclaves” means the pockets belonged to India before exchange, not that India received them.

Those figures describe the enclaves alone. They are not a complete ledger of every boundary adjustment under the agreement and protocol. In particular, the arrangement for adverse possessions recognised the position on the ground through boundary adjustments rather than requiring a matching displacement of residents.

The MEA booklet identifies approximately 6.1 kilometres of previously undemarcated boundary among the unresolved issues addressed by the protocol. It also explains why adding up enclave acreage cannot capture the administrative benefit: legal authority could be exercised by the country physically surrounding the residents.

What happened to the residents?

Eligible residents were offered a nationality choice, rather than an instruction that every household must relocate. In its answer to Lok Sabha Question 1748 on 4 May 2016, the MEA identified the eligible group as residents included in the joint headcount finalised in July 2011 and their children born subsequently.

The answer records that 979 people exercised the option to move to India in the July 2015 option-taking survey. That is a dated survey figure, not a fresh count of all enclave inhabitants or a claim about how many ultimately relocated. The same answer records an approved rehabilitation and infrastructure package of ₹1,005.99 crore, worked out with West Bengal.

The human point is straightforward: a territorial settlement can move the border's legal effect around a home while allowing its occupants to remain. Choice of nationality, relocation arrangements and services then need their own administrative work. The acreage alone does not describe that work.

What did the agreement settle?

It addressed the outstanding land-boundary questions specified in the agreement and protocol. It did not itself settle river-water sharing, all migration questions, or every operational issue along the border. Those involve other rules, agreements and institutions. The Ganga Water Treaty, for example, concerns a separate subject.

For an exam answer, the case illustrates a negotiated territorial settlement supported by constitutional procedure and arrangements for residents. Explain those mechanisms. Avoid turning it into a claim that a single agreement solved the entire bilateral relationship.