1942-1953

  • Agreement for first atomic bomb

    The development of the first atomic bomb is signed into an agreement between the Prime Minister of Great Britain, Winston Churchill, and President Franklin D. Roosevelt in Hyde Park, New York.
  • The Jefferson Memorial

    The Jefferson Memorial in Washington, D.C. is dedicated on the 200th anniversary of Thomas Jefferson's birth by President Franklin D. Roosevelt.
  • The G.I. Bill of Rights

    The G.I. Bill of Rights is signed into law, providing benefits to veterans.
  • Harry Truman establishes Committee on Civil Rights

    President Harry Truman establishes the President's Committee on Civil Rights to investigate the status of civil rights in the United States and propose measures to strengthen and protect the civil rights of American citizens.
  • Creation of CIA, Department of Defense, the Joint Chiefs of Staff, and the National Security Council.

    U.S. President Harry S. Truman signs the National Security Act of 1947 into law, creating the Central Intelligence Agency, the Department of Defense, the Joint Chiefs of Staff, and the National Security Council.
  • Development of the Hydrogen bomb

    President Harry S. Truman orders the development of the hydrogen bomb, in response to the detonation of the Soviet Union's first atomic bomb in 1949.
  • 22nd Amendment

    The Twenty-second Amendment to the United States Constitution, limiting Presidents to two terms, is ratified.
  • Eisenhower Presidency

    Dwight D. Eisenhower(R) is sworn in as the 34th President of the United States.