Manhattanprojekti
The Manhattan Project was a top-secret research and development undertaking by the United States with the support of the United Kingdom and Canada during World War II. Its primary objective was to produce the first nuclear weapons. The project began in 1942 and was codenamed after Manhattan, New York, where the project's initial headquarters were located.
The project involved a vast network of facilities and employed hundreds of thousands of people, though only
The culmination of the Manhattan Project was the successful detonation of the first atomic bomb, codenamed