In 1945, on this day, the United States dropped an atomic bomb in the city of Hiroshima. Hiroshima Day 2020 history The United States dropped an atomic bomb in the city of Hiroshima by an American B-29 bomber in the second world war. Hiroshima Day 2020 significance Hiroshima Day 2020 marks the 75th anniversary of the bomb killings. Hiroshima Day …
