1921-1941

  • New Chief Justice

    Former President of the United States William Howard Taft is sworn in as Chief Justice of the United States, making him the only person ever to hold both positions.
  • Stance on Evolution

    The governor of Oklahoma signs House Bill 197 with the Montgomery amendment outlawing the theory of evolution in public school textbooks purchased by the state, the first anti-Darwinian legislation passed in the U.S
  • New President

    Calvin Coolidge becomes the first President of the United States to have his inauguration broadcast on radio.
  • Butler Act (Evolution)

    Tennessee Governor Austin Peay signs the Butler Act, prohibiting the teaching of evolution in the state's public schools
  • New President

    Herbert Hoover is sworn in as the 31st President of the United States.
  • Great Depression Starts

    The stock market crashes which marks the start of the Great Depression
  • 20th Amendment

    The Twentieth Amendment to the United States Constitution is ratified, changing Inauguration Day from March 4 to January 20.
  • Record Breaking Heat Wave Peaks

    Peak of July 1936 heat wave: The U.S. states of Wisconsin, Michigan, and Indiana all set new state records for high temperature. At Mio in northern Michigan, it soars to 113 °F (45 °C).
  • Manhattan Project Starts

    Albert Einstein writes to President Franklin Roosevelt about developing the atomic bomb using uranium. This leads to the creation of the Manhattan Project.
  • Pearl Harbor

    Japan bombs the US at Pearl Harbor, causing US to enter WW2