-
1930
Hitler was in control of most of Europe -
1938
split the atom -
1939
Writes a letter to FDR and the letter is ignored by the goverment -
1938
discover fission -
1940
Hitler strikes the UK and gets the USAS attention -
1941
President decides to go ahead with the development of the atomic bomb -
1942
First controlled nuclear reaction occured -
1945
Makes the decision to drop the bomb -
1945
Trinity test in alamagordo -
1945
Bomb exploded 1900ft above ground