The Manhattan Project was a top-secret research and development program led by the United States during World War II. Its goal was to develop the world's first atomic bomb. The project was named after the Manhattan Engineer District, the code name for the US Army Corps of Engineers' office that oversaw
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The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. The Manhattan Project employed nearly 130,000 people at its peak and cost nearly US$2 billion.