History of the Manhattan Project

The Manhattan Project was a pivotal research and development project during World War II that produced the first nuclear weapons. Below is an overview of its history: ### Origins (1939-1942) - **Early Concerns:** Following the discovery of nuclear fission in 1938 by German scientists Otto Hahn and Fritz Strassmann, concerns emerged that Nazi Germany might develop atomic bombs. Prominent physicists, including Albert Einstein and Leo Szilard, urged the U.S.