The Creation of the World's Deadliest BombThe search for a weapon that could end the world's most devastating war World War II began almost immediately after the attack on Pearl Harbor. Pearl Harbor was secretly attacked by Japan, which entered the United States alongside its World War II allies. In 1938 some German scientists discovered that by bombarding uranium with neutrons they could split the nucleus of an atom. When the war broke out, scientists thought about the military use of this new discovery. When atoms split they release energy and if you put billions of these atoms together it could start a chain reaction and cause a massive explosion. Three physicists Leo Szilard, Eugene Wigner and Edward Teller believed that a nuclear weapon was possible and Germany had already started working on it. They thought this was very important to the war effort, so important that President Franklin D. Roosevelt must have known about it. However, they were not well known enough to attract the president's attention, so they won over the famous theoretical physicist Albert Einstein. Albert Einstein signed the letter and gave it to Roosevelt and said action was needed, so Leo Szilard asked for six thousand dollars worth of materials to produce a nuclear chain reaction. This experiment conducted by Enrico Fermi demonstrated that fission releases energy, enough energy to create a weapon that could decide the fate of war. Roosevelt created the Manhattan Project, his goal is to create an atomic bomb. The project was turned over to the Army Corps of Engineers who would lead and manage the project. The Manhattan Project was effective because of courageous leadership and scientific advances that led to the creation of the… world's paper medium… just the right amount of paper needed to run factories. But in the end the Army Corps of Engineers was able to complete the project and complete it. The Cold War then began, based on nuclear weapons created due to the Manhattan Project, and today nuclear bombs are twenty times more powerful than those used in Japan. Stanley, Matthew. Advanced World Book “Oppenheimer J. Robert”. Book of the world, 2014. Web. 24 February 2014“J. Robert Oppenheimer. American history. ABC-CLIO, 2014. Web. February 25, 1904 Sullivan, Edward T. The Ultimate Weapon: The Race to Develop the Atomic Bomb. New York: Holiday House, 2007. Print.Gonzales, Doreen. The Manhattan Project and the atomic bomb in American history. Berkeley Heights, NJ: Enslow, 2000. Print.Cohen, Daniel. The Manhattan Project. Brookfield, CT: Millbrook, 1999. Print.