Bidyadhari Mouth

The Bidyadhari mouth belongs to Bengal's delta coast, where waterways carried products from a wealthy inland economy toward the Bay of Bengal. The independent sultanate that emerged in the fourteenth century developed as a mercantile and maritime power. Mughal expansion later absorbed the region despite resistance from the Baro-Bhuyan confederacy.

Under imperial rule, Bengal became a major origin of muslin, silk, rice and other commodities, and its shipbuilding industry served a broad maritime market. European companies joined those routes, using the taka alongside local merchants in commercial exchange. Portuguese traders had established a settlement at Chittagong in 1528, and English, Dutch, French and Danish interests later competed around the province.

The balance changed after the Battle of Plassey in 1757, when the British East India Company increasingly controlled the nawab and regional government. Calcutta became the capital of British Indian territories in 1772. The delta's sea approaches consequently connected textile production and river transport with a transition from sultanate and Mughal commerce to company power.