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Manhattan Project
The Manhattan Project was a code name for the project of development the first atomic bomb created in New Mexico during WWII. Its creation was caused by Americans fearing that Germany was already working on nuclear weapons since the 1930s. -
Roosevelt's Forth Inauguration
Franklin D. Roosevelt swore-in as president of the United States of America for is fourth term. -
Yalta Conference
The U.S president, Franklin D. Roosevelt, the British Prime Minister, Winston Churchill, and Soviet Premier, Joseph Stalin, met to discuss the post-war fate of the defeated Germany and the rest of Europe. It was located in the city of Yalta and lasted from February 4-11. -
Roosevelt's Death
On April 12th, 1945, President Roosevelt suddenly dies from a stroke. Vice President Harry S. Truman take Roosevelt's place and remains the commander in chief of WWII. -
The Uses of The Atomic Bomb
President Truman authorizes the uses of atomic bombs in WWII. the first bomb was dropped on Hiroshima and the second bomb was dropped three days later onto Nagasaki, Japan. -
The U.S. Joins the United Nations
The U.S. Senate approves the entry of the U.S. into the United Nations by the vote of 65-7. -
The National Security Act of 1947
President Truman signs the National Security Act of 1947 creating the Central Intelligence Agency, the Department of Defense, the Joint Chiefs of Staff, and the National Security Council. -
The Marshall Plan
Congress passes the Marshal Plan, which gives post-war Europe $15 billion in aid in order to help the recovery of European countries. -
Truman's Second Inauguration
Harry S. Truman swore-in as president for his second term. -
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The Creation of the Hydrogen Bomb
The Soviet Union created its first atomic bomb in 1949 and as a result, President ordered the development of the Hydrogen bomb in 1950. In 1953, President Truman announced that the Hydrogen Bomb was created. -
The Twenty-Second Amendment
The amendment limits the Presidents to only serving two terms. -
Dwight D. Eisenhower Becomes President
Dwight D. Eisenhower becomes the 34th President of the United States, which brings Harry S. Truman's presidency to an end. -
Nuclear Testing
The U.S conducts its first and only testing of nuclear weaponry at the Nevada Test Site.