The Black Hole of Calcutta incident led to significant military action by which nation?

The Black Hole of Calcutta incident, which occurred in 1756, was a significant event in British colonial history, primarily involving the East India Company. The incident took place when a group of British soldiers and civilians were imprisoned in a small, overcrowded dungeon in Fort William, Calcutta, by the Nawab of Bengal, Siraj-ud-Daulah. The inhumane conditions of the dungeon led to the deaths of many of those captured. The outrage over this incident in Britain played a crucial role in mobilizing public opinion and justifying military intervention.

In response to the Black Hole incident, Britain undertook significant military action to assert its power and protect its interests in India. This led to the British effectively waging a campaign against the Nawab, culminating in the Battle of Plassey in 1757. This battle was a decisive victory for the British and marked the beginning of significant British territorial control in India.

Therefore, Britain is the correct answer because the incident spurred a military response that solidified British dominance in the region, changing the course of colonial history in India.