The war that spread beyond Southern India and into Bengal, where British forces under Robert Clive recaptured Calcutta from Nawab Sirajud-Daulah, who had the support of French, was ______.

The Battle of Plassey in 1757

The correct answer is Option 2- The Battle of Plassey in 1757

Battle of Plassey took place on June 23, 1757, and was a decisive conflict in the history of British India. In this battle, British forces under the command of Robert Clive defeated the Nawab of Bengal, Siraj ud-Daulah, with the support of his French allies. This victory established British dominance in Bengal and marked the beginning of British rule in India.