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The First Atomic Bomb
The Prime Minister of Great Britain, Winston Churchill, and President Franklin D. Roosevelt signed into an agreement of creating the first atomic bomb. -
Jefferson Memorial
Dedicated on the 200th anniversary of Thomas Jefferson's birth by President Franklin D. Roosevelt, it is located in Washington, D.C. -
Tehran Conference
The Tehran Conference was held for three days. U.S. President Franklin D. Roosevelt, British Prime Minister Winston Churchill, and Soviet leader Josef Stalin came to agreement of the June 1944 Invasion of Europe with the name Operation Overlord. -
D-Day/ The Invasion of Normandy
Allied soldiers stormed the beaches of France to begin the World War II invasion of Europe that would lead to the liberation of Paris. Operation Overlord gained footing quickly, pushing through the Atlantic Wall in the largest amphibious military operation in history. -
Death of President Roosevelt
President Roosevelt dies suddenly; Vice President Harry S. Truman assumes the presidency and role as commander in chief of World War II. -
Germany Surrenders
The unconditional surrender of Germany at Reims, France concludes the military engagements of World War II in Europe. -
Nagasaki and Hiroshima
President Harry S. Truman gives the go-ahead for the use of the atomic bomb with the bombing of Hiroshima. Three days later, the second bomb is dropped on Nagasaki, Japan. On August 15, Emperor Hirohito of Japan surrenders. -
The Truman Doctrine
The Truman Doctrine is announced to the U.S. Congress. When passed it would grant $400 million in aid to Greece and Turkey to battle Communist terrorism. -
NATO
North American Treaty Organization, is formed by the United States, Canada, and ten Western European nations. The treaty stated that any attack against one nation would be considered an attack against them all. -
The Korean War
Began its three-year conflict when troops of North Korea, backed with Soviet weaponry, invade South Korea. This act leads to U.S. involvement when two days later, the United States Air Force and Navy are ordered by President Truman to the peninsula.