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Henry Ford perfects mass production
Henry Ford installed the first moving assembly line for the mass production of an entire automobile. His innovation reduced the time it took to build a car from more than 12 hours to one hour and 33 minutes. -
Harlem Renaissance begins
The Harlem Renaissance was a period of rich cross-disciplinary artistic and cultural activity among African Americans between the end of World War I (1917) and the onset of the Great Depression and lead up to World War II (the 1930s). -
Prohibition begins
The 18th Amendment was ratified on January 16, 1919 and the country went dry at midnight on January 17, 1920. Prior to Prohibition various types of alcohol were produced all over the country. -
Women gain the right to vote
Passed by Congress June 4, 1919, and ratified on August 18, 1920, the 19th amendment granted women the right to vote. The 19th amendment legally guarantees American women the right to vote. Achieving this milestone required a lengthy and difficult struggle—victory took decades of agitation and protest. -
The Palmer Raids
It was a series of raids conducted in November 1919 by the United States Department of Justice under the administration of President Woodrow Wilson to capture and arrest suspected socialists, especially anarchists and communists, and deport them from the United States. -
Sacco and Vanzetti are convicted
Sacco and Vanzetti were tried and found guilty in July 1921. During the six years before they were executed, their names became known throughout the world. Protests were held in London, Paris, Milan, Berlin, and parts of South America and Asia. -
Teapot Dome Scandal
It was a bribery scandal involving the administration of United States President Warren G. Harding from 1921 to 1923. -
Scopes trial
The Scopes trial, formally The State of Tennessee v. John Thomas Scopes, and commonly referred to as the Scopes Monkey Trial, was an American legal case from July 10 to July 21, 1925, in which a high school teacher, John T. Scopes, was accused of violating Tennessee's Butler Act, which had made it illegal for teachers to teach human evolution in any state-funded school. -
Charles Lindbergh Crosses the Atlantic
Charles A. Lindbergh completed the first solo, nonstop transatlantic flight in history, flying his Spirit of St. Louis from Long Island, New York, to Paris, France. -
Kellogg-Briand pact signed
Fifteen nations signed the pact at Paris. Signatories included France, the United States, the United Kingdom, Ireland, Canada, Australia, New Zealand, South Africa, India, Belgium, Poland, Czechoslovakia, Germany, Italy and Japan. -
Black Tuesday stock market crash
A crowd of investors gather outside the New York Stock Exchange on "Black Tuesday"—October 29, when the stock market plummeted and the U.S. plunged into the Great Depression. On October 29, 1929, the United States stock market crashed in an event known as Black Tuesday.