The Manhattan Project was the project to develop the first nuclear weapon during World War II by the United States, the United Kingdom and Canada, under the military command of Major General Leslie R. Groves of the U.S. Army Corps of Engineers.
The Manhattan Project was the project to develop the first nuclear weapon during World War II by the United States. This was under the military command of Major General Leslie R. Groves of the U.S. Army Corps of Engineers. The Manhattan Project was the project to develop the first nuclear weapon during World War II by the United Kingdom. This was under the military command of Major General Leslie R. Groves of the U.S. Army Corps of Engineers. The Manhattan Project was the project to develop the first nuclear weapon during World War II by Canada. This was under the military command of Major General Leslie R. Groves of the U.S. Army Corps of Engineers.