Greater Bangladesh (translated variously as Bengali: বৃহত্তর বাংলাদেশ, Brihottor Bangladesh;Bengali: বৃহৎ বাংলাদেশ Brihot Bangladesh;Bengali: মহাবাংলাদেশ, Mohabangladesh; and Bengali: বিশাল বাংলা, Bishal Bangla) is a political theory circulated by a number of politicians, intellectuals and writers that the People's Republic of Bangladesh has aspirations of uniting Bengali speaking regions into a greater historical Bengal, to include the current Indian states of West Bengal, Nagaland, Manipur, Meghalaya, Sikkim, Arunachal Pradesh, Tripura, Assam, Andaman Islands and the Rakhine State (formerly Arakan) in Myanmar (Burma) as part of its own territory with democratic governance.
The ethno-linguistic region of Bengal encompasses the territory of Bangladesh and the Indian state of West Bengal, as well as parts of Assam, Tripura and eastern regions of the Indian subcontinent. During the rule of the Hindu Sena dynasty in Bengal the notion of a Greater Bangladesh first emerged with the idea of uniting Bengali-speaking people in the areas now known as Tripura, and Meghalaya along with the Bengal. These areas formed the Bengal Presidency, a province of British India formed in 1765, though Assam including Meghalaya and Sylhet District was severed from the Presidency in 1874, which became the Province of Assam together with Lushai Hills in 1912. This province was partitioned in 1947 into Hindu-majority West Bengal and Muslim-majority East Bengal (now Bangladesh) to facilitate the creation of the separate Muslim state of Pakistan, of which East Bengal became a province.