What was one effect of the Black Hole of Calcutta incident?

The Black Hole of Calcutta incident in 1756 was a pivotal event that significantly influenced British colonial policy in India. The incident involved the capture and confinement of British prisoners by the Nawab of Bengal, Siraj ud-Daulah, resulting in many deaths due to overcrowding and lack of ventilation in a small space. This event fueled British outrage and served as a rallying point for the British East India Company, ultimately leading to the military response that resulted in the defeat of the Nawab at the Battle of Plassey in 1757.

Following this victory, British control in India was markedly strengthened. The East India Company expanded its influence not only in Bengal but throughout India, solidifying its power and leading to a more direct form of colonial rule. This laid the groundwork for the extensive British Empire in India that would last until the mid-20th century. Thus, the incident directly contributed to the establishment of British dominance in the region, making the strengthening of British control in India the correct answer.