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D-Day
In Operation Overlord, the Allies went against German forces on the beaches of Normandy, France. The Allies were successful in the largest amphibious attack in history. -
Truman Becomes President
Vice President Harry S. Truman assumed office as the 33rd president of the United States after President Franklin D. Roosevelt died of a stroke. -
V-E Day
Shortly after Hitler died, Germany was conquered. They surrendered to the Allies, indicating the end of the war in Europe. -
First Atomic Bomb Dropped
As part of the Manhattan Project, the U.S. successfully dropped the first nuclear bomb, Trinity, in a New Mexico desert. J. Robert Oppenheimer is credited as the “father of the atomic bomb.” -
Atomic Bombings in Japan
The United States dropped two atomic bombs on the Japanese cities of Hiroshima and Nagasaki. They were called "Little Boy" and "Fat Man." -
World War II Ends
The war officially ended when Japan surrendered. This day became known as Victory over Japan Day, or V-J Day. -
NATO is Formed
The North Atlantic Treaty Organization was established by the U.S., Canada, and Western European countries to provide security for its members. -
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Korean War
The Korean War began when South Korean troops invaded North Korea. It ended with the Korean Armistice Agreement.