Manhattanproject
The Manhattan Project was a research and development program during World War II that produced the first nuclear weapons. Initiated in 1942 by the United States with support from the United Kingdom and Canada, it arose from concerns that Nazi Germany might develop an atomic bomb. The project brought together thousands of scientists, engineers, and military personnel under strict secrecy, with the aim of creating a deployable weapon as quickly as possible.
The program was organized under the U.S. Army Corps of Engineers as the Manhattan Engineer District and
The project culminated in two weapons being used in warfare: Little Boy, a uranium-235 gun-type device dropped