1939 ⟶ Einstein-Szilard Letter Sent to Roosevelt

The Einstein–Szilard letter is sent to President Roosevelt. ...
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1939
1941
1942

✉️ Einstein-Szilard Letter Sent to Roosevelt

The Einstein–Szilard letter is sent to President Roosevelt. Written by Leo Szilard and signed by Albert Einstein, it warned of the danger that Germany might develop atomic bombs. This letter prompted action by Roosevelt and eventually resulted in the Manhattan Project.⟶
Einstein-Szilard Letter Sent to Roosevelt (1939)
USEinsteinSzilardRooseveltAtomic BombManhattan ProjectScienceGermanyNuclearWar

✉️ Roosevelt Seeks Peace with Germany and Italy

U.S. President Roosevelt sends letter to German Chancellor Hitler and Italian Prime Minister Mussolini seeking peace.⟶
Roosevelt Seeks Peace with Germany and Italy (1939)
USRooseveltDiplomacyPeace EffortsGermanyItaly1939

☢️ President Roosevelt Authorizes Funds for Manhattan Project

President Roosevelt authorizes $6,000 For Executive Order 8807 (Manhattan Project-Nuclear Weapons).⟶
United StatesManhattan ProjectNuclear WeaponsAtomic BombResearch and DevelopmentWorld War IIScientific AdvancementExecutive Order 8807Roosevelt

☢️ First Nuclear Chain Reaction Achieved

Below the bleachers of Stagg Field at the University of Chicago, a team led by Enrico Fermi initiates the first nuclear chain reaction. A coded message, "The Italian navigator has landed in the new world" is sent to President Roosevelt.⟶
First Nuclear Chain Reaction Achieved (1942)
USNuclearChain ReactionFermiManhattan ProjectScienceTechnologyWorld War IIAtomic BombChicago