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The US wanted to develop a weapon before the Germans did, and fortunately had the scientists and resources to build one. Many key individuals came from European countries impacted by the war.

In 1939, just before World War II, physicists including Albert Einstein had written a letter to President Franklin D. Roosevelt about the possibilities of a "bomb" releasing fission energy from a critical mass of uranium. After the war broke out, FDR became concerned about the possibility that Germany could develop such a bomb, and in 1941 created the OSRD (Office of Scientific Research and Development) to investigate further. By 1942, the far-flung efforts were placed under the military command known collectively as the Manhattan Project.

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Q: What led the US to build the atomic bomb?
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Why did the US build the atomic bomb?

To defend against a possible Nazi atomic bomb!


When did the us build the atomic bomb?

1945


Who led the US to construct the atomic bomb?

J. Robert Oppenheimer & general Leslie Groves


What ended war in japan in world war 2?

the atomic bomb led to the surrender in the pacific


Who created and used the atomic bomb?

the us created the atomic bomb


If the atomic bomb cost billions of dollars why did you build one?

The original reason that the US began the project to build the atomic bomb was fear. Fear that Nazi Germany would build one first and use it to take over the world.After the war ended the US and USSR built them out of fear of each other.


What major event led to the surrender of Japanese forces?

The US drops the atomic bomb on two Japanese cities.


The top secret program to build a atomic bomb was called what?

There were a number of top secret programs to build an atomic bomb. If you mean the secret plan of the US, it was called the Manhattan Project.


Who left Germany became a US citizen and urged the US to start working to build an atomic bomb before the Germans did?

Einstein


Why was the US in a rush to build an atomic bomb?

The fear that Germany was already well on the way to building an atomic bomb and could make first use of them against either England or the USSR at any moment.


Is Pakistani bomb is an Islamic bomb?

If you consider the US atomic bomb is a Christian bomb, the French atomic bomb is also Christian bomb and so on, then you can name the Pakistani atomic bomb an Islamic bomb.


What was the us governments effort to build the atomic bomb called?

The allieds (US, UK and Canada) called the project to make the Atomic Bomb was called the manhattan projecty. It started on 13th August 1942 and was abaloished in August 15th 1947.