The history of the Bengali community in Assam, along with many other communities such as the Marwari traders and the Nepalis, can be dated to the early decades of British rule in Assam when the East India Company found itself relying on Bengali amlahs (court officials) for its policing, legal and revenue administration of the newly acquired kingdom of Assam. The Bengali community grew partly due to the encouragement that the Company gave the Bengali language by using it in its courts, administration, and schools. While in 1873 Assamese replaced Bengali as the medium of instruction and language of the court, with some caveats and exceptions, the province of Assam, which was formed in 1874, brought together four historically distinct spaces in the region, including the two Bengali-speaking districts (Sylhet and Cachar) of the Barak-Surma Valley. The decades leading to Partition witnessed various factors, including employment opportunities and cultural and linguistic belonging, leading to contradictory pulls in Sylhet and Cachar on the question of whether it should be integrated with Bengal or Assam. Another important factor was the growth of linguistically based Assamese nationalism whose politics lay in the articulation of a unique Assamese literary and cultural identity along with the securing of employment opportunities. The latter would lead to a demand of an Assamese homeland free of competition from the Bengali middle class. A referendum in July 1947 based on limited franchise led to Sylhet being integrated to Pakistan while Cachar remained part of Assam and India. Other than the Bengali-speaking communities of Sylhet and Cachar, a history of the Bengali-speaking communities in Assam involves the story of peasant cultivators from East Bengal who continuously migrated into Assam in the early decades of the 20th century. While earlier pre-colonial patterns of migration were seasonal, the colonial state’s primary aim of acquiring high agrarian revenue led to specific policies and schemes that encouraged peasant migration into Assam from East Bengal. This further encouraged an intensification of commercial agriculture especially jute, changes in the transport network in the Brahmaputra valley, a developed credit network, and some local elements such as Marwari businessmen and Assamese moneylenders. However, with time this migration created conditions of insecurity for Assamese peasants who faced ejection from their lands as a result of the growing competition for cultivable land and higher rents. The colonial state’s attempt at regulating the migration—such as through the Line System in the 1920s—became a site of contestation among many emerging nationalist and political perspectives, whether of the Congress, the Muslim League or others. The tussle between the preservation of the rights and claims of indigenous peasants over grazing and forest reserves and those of Bengali Muslim immigrants over land defined the politics of the 1940s in Assam until Partition.