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Nicola Sacco and Bartolomeo Vanzetti were arrested in May 1920 -
KDKA officially went on the air from Pittsburgh on November 2, 1920 -
The first Miss America contest was held in Atlantic City, New Jersey, on September 7–8 1921 -
The Teapot Dome scandal was a political corruption scandal in the United States involving the administration of President Warren G. Harding -
It was held in France from January 25- February 5 1924 -
The Scopes Monkey trial was a 1925 legal case in which high school teacher John Scopes was accused of violating Tennessee's Butler Act -
The novel was published on 10 April 1925 by the publisher Charles Scribner's Sons -
Charles Lindbergh completed the first solo nonstop flight across the Atlantic in May 1927 -
The Jazz Singer debuted in New York City on October 6, 1927, and is considered the first commercially successful feature film to include synchronized sound -
The Saint Valentine's Day Massacre was the murder of seven members and associates of Chicago's North Side Gang on Saint Valentine's Day 1929. -
The Wall Street Crash of 1929, also known as the Great Crash, was a sudden and severe decline in U.S. stock prices in October 1929