From Ohio History Central
no edit summary
The Manhattan Project was the code name given to the efforts of the United States, Great Britain and Canada to develop the first atomic bomb during World War II.
The atomic bomb did help the United States attain victory over Japan during World War II. Unfortunately, the atomic bomb's development prompted other nations to develop similar weapons. While the United States had a monopoly on the atomic bomb between 1945 and 1949, the Soviet Union developed its own weapon of mass destruction in 1949, helping to divide the world even further during the Cold War.
[[Category:Great Depression and World War II]]