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Most likely Franklin D. Roosevelt in the last couple months of his life. He had authorized the program to build them and kept both the project and plans for possible use classified at such a high level that none of his Vice Presidents knew anything about it. Even Harry S. Truman knew nothing of it until several hours after being sworn in as President following Franklin D. Roosevelt's death.
After his briefing on the status of the project and Franklin D. Roosevelt's plans (which the military was already beginning to incorporate into their war preparations for the invasions of Japan) Harry S. Truman obviously saw no need to change anything and simply allowed things to proceed just as they would have had not Franklin D. Roosevelt died.
Harry S. Truman's one real action on the atomic bomb was to cancel the existing authorization for the usage of the atomic bomb, following the Japanese announcing they were willing to surrender.
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∙ 7y ago
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∙ 11y agoWiki User
∙ 12y agothe president and head general of the army at that time period approved of the drop of the atomic bomb.
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∙ 13y agoThe authorization to use the atomic bomb came from the president of the United States of America. It was Harry Truman at the time.
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∙ 14y agoUS President Harry S Truman
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∙ 14y agoHenry Truman
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∙ 13y agoPresident Truman, of the united states.
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∙ 10y agoharry truman
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What did the US do when the first atomic bomb drop did not happen?
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.
Who decided to drop an atomic bomb on japan?
The US President Harry Truman.
Which US president decided to drop the atomic bomb?
President Harry Truman.
Who decided the name of the cities that the US dropped the atomic bomb on?
That decision was not made by a group of persons, it was Truman who decided it.
What President dropped the bomb on Hiroshima?
While the development of the atomic bomb was initiated under FDR, Harry S Truman was president when the final decision was made to drop the bomb.
What did the US do when the first atomic bomb drop did not happen?
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.
Who decided to drop the atomic bomb and why?
Truman. The war needed to be ended ASAP!
Who decided to drop an atomic bomb on japan?
The US President Harry Truman.
Which US president decided to drop the atomic bomb?
President Harry Truman.
Who decided the name of the cities that the US dropped the atomic bomb on?
That decision was not made by a group of persons, it was Truman who decided it.
What President dropped the bomb on Hiroshima?
While the development of the atomic bomb was initiated under FDR, Harry S Truman was president when the final decision was made to drop the bomb.
Who decided the atomic bomb should be used?
I believe it was the president, Harry S. Truman
What did the US hope to achieve when they decided to drop the atomic bomb on the Japanese?
Win WW2.
Who was president when the atomic bomb was made?
Franklin Roosevelt- but he died before the atomic bomb was used. Harry Truman was the next president, and ordered the use of the atomic bomb.
What was the first bomb they use in world war 1?
the atomic bomb
Which was a NOT a major factor in the decision to use the atomic bomb?
One thing that was not a major factor in the decision to use the atomic bomb was civilian casualties.
Which was not a major factor in the decision to use the atomic bomb?
One thing that was not a major factor in the decision to use the atomic bomb was civilian casualties.
