East Bengal

East Bengal (/bɛnˈɡɔːl/; Bengali: পূর্ব বাংলা/পূর্ববঙ্গ Purbô Bangla/Purbôbongo) was the easternmost and non-contiguous province of the Dominion of Pakistan, which covered the territory of modern-day Bangladesh. It consisted of the eastern portion of the British administrative Bengal province and the lion half of Sylhet district from the Assam province. East Bengal existed from 1947 until 1956, when it was re-structured as East Pakistan under the One Unit Scheme by the Constitution of Pakistan of 1956. East Bengal had a coastline along the Bay of Bengal to the south, and bordered India to the north, west, and east and shared a small border with Burma (presently known as Myanmar) to the southeast. It was situated near, but did not share a border with Nepal, Tibet, the Kingdom of Bhutan and the Kingdom of Sikkim. Its capital was Dacca, now known as Dhaka.

The Partition of India, which divided Bengal along religious lines, established the borders of the Muslim-majority area of East Bengal. The province existed during the reign of two monarchs, George VI and Elizabeth II; and three governors-general, Muhammad Ali Jinnah, Khawaja Nazimuddin and Ghulam Muhammad. Its provincial governors included a British administrator and several Pakistani statesmen. Its chief ministership was held by leading Bengali politicians.

East Bengal was the most populous and cosmopolitan province in the dominion. It was a hub of political movements, including the Bengali language movement and pro-democracy groups. The provincial legislature was the East Bengal Legislative Assembly.

Between 1905 and 1911, a province called Eastern Bengal and Assam existed in the region as part of the British Indian Empire. The All India Muslim League was founded in the British province in 1906.

The All India Muslim League adopted the Lahore Resolution in 1940, which envisaged the creation of sovereign states in the Muslim-majority areas of eastern and northwestern British India. The League won elections in Bengal in 1946, receiving its largest mandate in the province.

In May 1946, Rohingya Muslim leaders met with Muhammad Ali Jinnah, and asked for a formal annexation of the Mayu region. Two months later, the North Arakan Muslim League also asked Jinnah to annex the region. Jinnah refused, saying he could not interfere with Burma's internal matters. Proposals were also made to the Burmese government but they were rejected.

The District of Sylhet in Assam Province also voted to reunite with the rest of East Bengal, and the Muslim League's campaign played a great role in facilitating this. A plebiscite was held which resulted in joining Pakistan. However, a large part of Sylhet's Karimganj subdivision was barred due to Abdul Matlib Mazumdar's delegation. The Chittagong Hill Tracts, which had a 97% non-Muslim population (mostly Buddhist), was awarded to Pakistan, by the Boundary Commission, due to it being inaccessible to India and to provide a substantial rural buffer to support Chittagong, a major city and port; advocates for Pakistan forcefully argued to the Bengal Boundary Commission that the only approach was through Chittagong.

As a result of these mandates, the Mountbatten Plan and Radcliffe Line established East Bengal as a province of the newly formed Dominion of Pakistan in August 1947.