The Bengal Presidency, officially the Presidency of Fort William in Bengal until 1937, later the Bengal Province, was the largest of all three presidencies of British India during Company rule and later a Province of British India. At the height of its territorial jurisdiction, it covered large parts of what is now South Asia and Southeast Asia. Bengal proper covered the ethno-linguistic region of Bengal (present-day Bangladesh and the Indian state of West Bengal). Calcutta, the city which grew around Fort William, was the capital of the Bengal Presidency. For many years, the governor of Bengal was concurrently the governor-general of India and Calcutta was the capital of India until 1911.
The Bengal Presidency emerged from trading posts established in the Bengal province during the reign of Emperor Jahangir in 1612. The East India Company (EIC), a British Indian monopoly with a royal charter, competed with other European companies to gain influence in Bengal. In 1757 and 1764, the company defeated the Nawab of Bengal, who acted on Mughal sovereignty, at the Battle of Plassey and the Battle of Buxar, and Bengal came under British influence. In 1765, Emperor Shah Alam II granted revenue rights over Bengal to the company and the judicial rights in 1793. After this, the Bengal province was later merged with the Presidency of Fort William but under the suzerainty of the Emperor until 1835.