What was the Black hole tragedy a Death of French prisoners by the army sent by Nawab Anwaruddin b D...........

Explanation:

 The Black hole incident took place in Bengal in June 1756,The young Nawab( SirJ-ud-Daulah) was wary of the growing intervention of the British in the affairs of the province. The ungovernable temper of Siraj led to a rupture with the English within two months after his accession. He marched upon Calcutta with a large army and laid the siege of the site of the Fort William.

Many British fled down the river in their ships and the remainder 146 people were compelled to surrender. These people were stuffed for a night in a room of 18 square feet, with only two windows and 123 people (Including natives) got suffocated to death. This is called the Black Hole tragedy of Calcutta (1756), which is still doubtful.