Answer : 4. "प्लासी की लड़ाई"
Explanation :

The famous Battle of Plassey was fought here on 23rd June, 1757 between the last independent ruler of Bengal, NawabSiraj Ud-Daula (1756-1757) and the British forces under the command of Lord Clive. This battle marked the advent of the British rule in the erstwhile Bengal and in India as a whole.