The US government used the name, Manhattan project for a project that was classified to everyone. The Goal of this project was to create an atomic bomb. The bomb was created later in World War 2 and eventually the evolution of the nuclear bomb. the first test for the atomic bomb was dropped on los Alamo This was on July 6, 1945.A month after the first bomb was tested, two nuclear bombs were dropped on top of Japan, on hiroshima and Nagasaki.