Explanation

On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world's first deployed atomic bomb on the Japanese 

The atomic bombings of Hiroshima and Nagasaki were the detonation of two atomic bombs on 6 and 9 August 1945 in the United States.

The Little Boy type of bomb was dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II.

The Fat Man was dropped on Nagasaki, Japan, on August 9, 1945, at 11:01 AM.

Hiroshima deaths: around 40000

Nagasaki deaths: around 80000