The Battle of Plassey was a decisive victory of the British East India Company over the Nawab of Bengal and his French allies on 23 June 1757. The battle took place at Palashi on the banks of the Bhagirathi River.
Robert Clive bribed Mir Jafar, the commander in chief of the Nawab's army, and also promised him to make him Nawab of Bengal. He defeated the Nawab at Plassey in 1757 and captured Calcutta.
This is judged to be one of the pivotal battles in the control of Indian subcontinent by the colonial powers. The British now wielded enormous influence over the new Nawab Mir Jafar and consequently acquired significant concessions for previous losses and revenue from trade. The British further used this revenue to increase their military might and push the other European colonial powers such as the Dutch and the French out of South Asia, thus expanding the British Empire.