Why did harry truman decide to drop the atomic bomb on japan? advisers misled him to believe that the atomic bomb was much safer than other weapons of the day. he thought that far fewer people would die from an atomic bomb than from a military invasion of japan. he thought if he destroyed tokyo with an atomic bomb, japan would surrender. atomic bombs had not yet been tested, and he wanted to find out how powerful they were.

President Harry S. Truman, warned by some of his advisers that any attempt to invade Japan would result in horrific American casualties, ordered that the new weapon be used to bring the war to a speedy end. On August 6, 1945, the American bomber Enola Gay dropped a five-ton bomb over the Japanese city of Hiroshima.

its B because if there was a invasion of japan then there could have been over a million casulties

spanish executed counts egmont and horne in brussels.