1942-1953

  • Chicago Reactor 1

    President Roosevelt issued Executive Order 9066, which transferred 11,000 Japanese citizens, including Japanese-Americans, to 10 remote concentration camps. The first nuclear reactor was built, Chicago Reactor 1, on the campus of the University of Chicago.
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    Franklin Delano Roosevelt

    President
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    Harry S. Truman

    President
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    The Us air force was involved in the British-led bombing of Dresden

    The Us air force was involved in the British-led bombing of Dresden
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    The United States dropped two atomic bombs on Hiroshima and Nagasaki at the end of World War II

    The United States dropped two atomic bombs on Hiroshima and Nagasaki at the end of World War II
  • President Harry Truman established the CENTRAL Intelligence Agency

    President Harry Truman established the CENTRAL Intelligence Agency
  • President Truman signed Executive Order 9981 to integrate the U.S. military racially

    President Truman signed Executive Order 9981 to integrate the U.S. military racially
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    Korean War: The United States sends nearly 500,000 troops to defend South Korea against North Korea

    Korean War: The United States sends nearly 500,000 troops to defend South Korea against North Korea
  • President Truman created the National Security Agency to collect intelligence in response to the Cold War

    President Truman created the National Security Agency to collect intelligence in response to the Cold War