The Battle of Plassey was fought in 1757 between the forces of the British East India Company led by Robert Clive and Siraj ud-Daulah, the Nawab of Bengal. The British promised to make Mir Jafar the new Nawab if he helped them defeat Siraj ud-Daulah. During the battle, Mir Jafar and the British fought together against Siraj ud-Daulah's weaker army, allowing the British to emerge victorious. As a result of their victory, the British installed Mir Jafar as the new Nawab of Bengal, marking the beginning of British rule over India.