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US, the US was the only one that had them at the time.
I tend to believe that the 2 dropped were the onlyassembled fission bombs in US stockpile when they were dropped, but parts for more were ready to assemble. Probably bombing could have resumed at a rate of almost 2 per week by the end of august if Japan had not surrendered.
I know for certain that the entire US stockpile in 1946 at the start of operation Crossroads was exactly 6 fission bombs. Crossroads exploded 2 of those, reducing the US stockpile to only 4 fission bombs.
What else can I help you with?
When was the first nuclear weapon used by one country to attack another?
August 6, 1945 on Hiroshima Japan by the US.
What place did the us attack after pearl harbor?
The US didn't directly attack anybody. Japanese ships atacked a patrol, thus leading to the famous Battle at Midway.
What was the first city to be bombed with an atomic bomb?
Hiroshima, Japan was the first city in history to suffer a nuclear attack on August 6, 1945. Nagasaki was attacked with a nuclear weapon three days later. These are the only two nuclear weapons used in anger.
What countries used nuclear weapons in World War 2?
The only country to ever use nuclear weapons in war is the United States with the two bombs they dropped on Japan. No other country has ever actually used a nuclear weapon.
Who was the first to use plutonium?
The first use of plutonium was as nuclear weapon; United States was the first country to use these weapons against Japan.
What cities have been attacked with nuclear bombs?
Only two cities in Japan have been attacked with nuclear bombs at the end of WW2: Hiroshima and Nagasaki.
When was the first nuclear reactions done?
That was in Japan when the U.S. attacked them with our nuclear bombs. Which was the attack of Pearl Harbor, obviously not in Hawaii, we attacked them in Hiroshima and Nagasaki.
What were the results of the US using Nuclear weapon on Japan?
End of WW2.
What weapon led to Japan's defeat?
The Nuclear Bomb Dropped By The U.S.A.
Where was the first nuclear weapon detonated?
The first nuclear weapon was used on Hiroshima , Japan . The first nuclear bomb test was conducted in Alamogordo, New Mexico, on July 16, 1945 .
Which president ordered the combat use of nuclear weapon?
Truman in WW2 on Japan.
What new weapon did Harry Truman use against japan?
nuclear bomb
