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Franklin D. Roosevelt's Presidency
Franklin Delano Roosevelt, often referred to by his initials FDR, was an American politician who served as the 32nd president. Assuming the Presidency at the depth of the Great Depression, he helped the American people regain faith in themselves. He brought hope as he promised prompt, vigorous action, and asserted in his Inaugural Address, “the only thing we have to fear is fear itself.” -
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The Manhattan Project
The Manhattan Project was a research and development project in World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada. -
The GI Bill
Originally established to provide services and benefits to the veterans of World War II, the Servicemen's Readjustment Act of 1944, also known as the G.I., gave higher education, job training, and homeownership within the reach of millions of World War II veterans. -
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Harry S. Truman's Presidency
During his few weeks as Vice President, Harry Truman scarcely saw President Franklin Roosevelt, and received no briefing on the development of the atomic bomb or the unfolding difficulties with Soviet Russia. Suddenly these and a host of other wartime problems became Truman’s to solve when he stepped in as America’s 33rd President upon Franklin's death. -
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Atomic bombings of Hiroshima and Nagasaki
The United States detonated two nuclear weapons over the Japanese cities of Hiroshima and Nagasaki. 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. -
The First Supersonic Aircraft
In aerodynamics, the sound barrier usually refers to the point at which an aircraft moves from transonic to supersonic speed. Just under a month after the United States Air Force had been created as a separate service, tests culminated in the first manned supersonic flight where the sound barrier was broken, piloted by Air Force Captain Chuck Yeager in the Bell X-1. -
The First Transistor
A transistor is a semiconductor device commonly used to amplify or switch electronic signals. Because the controlled output power can be much larger than the controlling input power, the transistor provides amplification of a signal. The transistor is the fundamental building block of all modern electronic devices. It is used in radios, telephones, computers, and other electronic systems. For this, Shockley, Bardeen, and Brattain were jointly awarded the 1956 Nobel Prize in Physics. -
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The Korean War
The Korean War was between North and South Korea. It began when North Korea invaded South Korea following clashes along the border and insurrections in the south. The war ended unofficially in an armistice. -
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The Battle of Bloody Bridge
The Battle of Bloody Ridge, a ground combat battle that took place during the Korean War, began as an attempt by UN forces to seize a ridge of hills that they believed were being used as observation posts to call in artillery fire on a UN supply road. The American and Korean sides suffered almost 3,000 casualties. The North Korean and Chinese sides, however, suffered a blood bath of 15,000 dead. -
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Brown v. Board of Education
Brown v. Board of Education of Topeka, 347 U.S. 483, was a landmark decision of the U.S. Supreme Court in which the Court ruled that U.S. state laws establishing racial segregation in public schools are unconstitutional, even if the segregated schools are otherwise equal in quality.