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Tehran conference
At Tehran in 1943, Roosevelt and Churchill convinced Stalin to send a Soviet delegation to a conference at Dumbarton Oaks, in the Georgetown neighborhood of Washington, D.C., in August 1944, where they agreed on the basic structure of the new organization. -
D-Day
D-Day, as it became popularly known, was the largest amphibious assault in history. -
Harry S. Truman became president
President Harry S. Truman defeated Republican Governor Thomas E. Dewey. Truman had ascended to the presidency in April 1945 after the death of Franklin D. -
Little Boy
On August 6, 1945, Harry Truman disclosed to the American public that the United States had detonated an atomic bomb over Hiroshima, Japan. -
Fat Man
"Fat Man" is the codename for the type of nuclear bomb that was detonated over the Japanese city of Nagasaki by the United States on 9 August 1945. It was the second of the only two nuclear weapons ever used in warfare -
Truman Doctrine
The “Truman Doctrine” directed the United States to actively support anti-communist forces around the world. -
Marshall Plan
To avoid the postwar chaos that had followed in the wake World War I, the Marshall Plan was designed to rebuild Western Europe, open markets, and win European support for capitalist democracies -
The Korean War
The Korean War was fought between North Korea and South Korea from 1950 to 1953. The war began on 25 June 1950 when North Korea invaded South Korea following clashes along the border and rebellions in South Korea. -
First Hydrogen Bomb
The United States detonated the first thermonuclear weapon, or hydrogen bomb on November 1, 1952. The blast measured over ten megatons and generated an inferno five miles wide with a mushroom cloud twenty-five miles high and a hundred miles across.