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President Roosevelt Approves Production of the Atomic Bomb
In January 1942, President Roosevelt officially approved the project to make the first atomic weapons. General Leslie Groves was put in charge of the massive effort, which included the federal government seizing land in Oak Ridge, Tennessee to build a production facility housing about 75,000 workers. -
Harry S. Truman Presidency
President Roosevelt dies. Harry S. Truman becomes President. -
The Development of the Atomic Bomb
Robert Oppenheimer, “father of the atomic bomb.” On July 16, 1945, in a remote desert location near Alamogordo, New Mexico, the first atomic bomb was successfully detonated—the Trinity Test. It created an enormous mushroom cloud some 40,000 feet high and ushered in the Atomic Age. -
The Atomic Bombs Dropped in Hiroshima and Nagasaki
The United States detonated two nuclear weapons over the Japanese cities of Hiroshima and Nagasaki on 6 and 9 August 1945, respectively. The two bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in armed conflict. Wikipedia -
The End of World War II
Truman announced Japan's surrender and the end of World War II. The news spread quickly and celebrations erupted across the United States. On September 2, 1945, formal surrender documents were signed aboard the USS Missouri, designating the day as the official Victory over Japan Day (V-J Day). -
The Philippines Gain Independence
The United States of America granted independence to the Philippines on July 4, 1946. In accordance with the Philippine Independence Act (more popularly known as the "Tydings–McDuffie Act"), President Harry S. Truman issued Proclamation 2695 of July 4, 1946 officially recognizing the independence of the Philippines. -
The Soviet Union Develops the West Berlin Blockade
Berlin blockade, an international crisis that arose from an attempt by the Soviet Union, in 1948–49, to force the Western Allied powers (the United States, the United Kingdom, and France) to abandon their post-World War II jurisdictions in West Berlin. -
NATO is Founded
The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 European and North American countries. The organization implements the North Atlantic Treaty that was signed on 4 April 1949. -
The Korean War
The Korean War was a war between North Korea and South Korea. The war began on 25 June 1950 when North Korea invaded South Korea following clashes along the border and insurrections in the south. The war ended unofficially on 27 July 1953 in an armistice. -
Dwight D. Eisenhower is Inaugurated President.
Eisenhower as the 34th President of the United States was held on Tuesday, January 20, 1953, at the East Portico of the United States Capitol in Washington, D.C. This was the 42nd inauguration and marked the commencement of the first term of Dwight D. Eisenhower as President and of Richard Nixon as Vice President.