"Who" is a relative question....."who" in the sense of what nation would be the United States which dropped the first atomic bomb on Hiroshima Japan August 6,1945. The "who" in the sense of what person - is usually accredited to Col. Paul Tibbets US Army Air Forces, the commander of the aircraft named Enola Gay (after his mother) which carried and dropped the bomb. The Japanese had been given a surrender ultimatum, and when there was no response from their government a second atomic bomb was dropped on the city of Nagasaki Japan on Aug 9. Both were devestating in death and destruction and they remain the only time in history nuclear weapons were used against a population. These were both nuclear fission weapons. The Hiroshima bomb was a uranium-based device, the Nagasaki bomb used plutonium (derived from uranium). There continues to this day much controversy as to the need for using these weapons since Japan had already seen most of its major cities fire-bombed with conventional pyrotechnic weapons causing equal devestation and killing and maiming as many people. Despite the terrible results of these two bombs, they are mere toys compared with the hydrogen-based (thermnuclear) weapons developed during the cold war which are hundreds of times more fearsome in their potential for destruction.
President Harry S. Truman, the 33rd President of the United States of America decided to drop the bomb. B-29 Superfortress Enola Gay carried the bomb to Hiroshima and Colonel Paul Tibbets dropped the bomb.
The US at Hiroshima, Japan.
(see the related questions link below for a more in-depth answer)
The first atomic bomb detonated was not dropped, it was hung from the top of a steel structure and detonated remotely.
Germany never had an atomic bomb.
1945
when Soviets explode first atomic bomb
The Enola Gay dropped the first atomic bomb.
The first bomb was dropped on Hiroshima in August.
1942
hiroshima
pearl harbor
Japan's capital, Hiroshima
The first atomic bomb detonated was not dropped, it was hung from the top of a steel structure and detonated remotely.
If you are asking about what happened in the next 3 days?Then the United States decided to drop the next atomic bomb on the city of kobe.When the aircraft arrived over the city the visibility was not good enough to bomb this city and it was decided to bomb the secondary target,which turned out to be Nagasaki.This was done on the date of August 9th,1945.
Japan refused to surrender after the first atomic bomb.
Hiroshima then Nagasaki .
HIROSHIMA
Germany never had an atomic bomb.
The Atomic bomb had to drop first, because after the bombing on Hiroshima and Nagasaki, Japan surrendered.