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Period: to
The Roaring Twenties
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Hurricane Hits Washington and Oregon
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Congress upholds the 19th Amendment
Women are granted the opportunity to vote in federal elections -
Insulin Becomes Available to Diabetics
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Statue of Liberty Declared a National Monument
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Calvin Coolidge Elected President of The United States
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Mount Rushmore is First Proposed
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Erwin Schrödinger
Erwin Schrödinger publishes his theory of wave mechanics and presents what becomes known as the Schrödinger equation in quantum mechanics -
Babe Ruth Hits Sixtieth Homerun to beat the record
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Herbert Hoover Wins Presidential Election by a Landslide
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Stock Market Crashes