Complex sentence: The sniper fire and the bombardment continued until 23 June 1857, the 100th anniversary of the Battle of Plassey, which took place on 23 June 1757, was one of the pivotal battles leading to the expansion of British rule in India.
Split into simpler sentences: The sniper fire and the bombardment continued until June 23,1857, the 100th anniversary of the Battle of Plassey. The Battle of Plassey, which took place on June 23,1757, was one of the pivotal battles leading to the expansion of the British rule in India.