Why did they attack Hiroshima?

Answer 1

Americans dropped an atomic bomb on Hiroshima becasue Japan and the US were fighting each other in an all-out war, and American leaders believed that doing this would help to end the war with fewer American casualties that other methods would.

Answer 2

to scare japan into surrounding, they chose Hiroshima and Nagasaki, because they are not too populated

Answer 3

Because Japan attacked Pearl Harbor.