Question

when and where first atom bomb through

Answer 1

Heya☺

Here is your answer☺

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

Thus every year this day is celebrated as the Hiroshima day...

#hope it helps☺

Answer 2

On August 6, 1945 The United States of America dropped the uranium-made bomb “Little Boy” on Hiroshima, Japan by the B-29 bomber ‘Enola Gay’