The project to build the atomic bomb was given the secret code-name of "The Manhattan Project", however the bombs were not built in Manhattan. Check wikipedia for details on actual locations.
The atom bomb - which was then used on Hiroshima and Nagasaki in Japan.
Codename was - The Manhattan Project.
Look up "The Manhattan Project"
The Manhattan Project was the secret research program to develop the atom bomb.
It was actually the atom bomb from the Manhattan project. It was dropped on Hiroshima, Japan on August 6, 1945 (that one was a uranium bomb) And dropped on Nagasaki, Japan on August 9, 1945 (a stronger plutonium bomb)
Atom Bomb = Uranium H-Bomb = Hydrogen
One was the invention of the atom bomb
The atomic bomb was made to end World War II and was built during the USA's Manhattan Project.
There were no warnings. The Manhattan Project was a secret. This was the name of the research project that developed the atom bomb.
The atom bomb research and development were conducted under the Manhattan project.
There were a number of top secret programs to build an atomic bomb. If you mean the secret plan of the US, it was called the Manhattan Project.
The atom bomb was invented by the brilliant research of a group of scientists in 1945, working on what was known as "The Manhattan Project". The lead scientist was J. Robert Oppenheimer.