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Zimmermann Note
In 1917, German secretary Arthur Zimmerman had secretly proposed a German-Mexican alliance against the United States. -
Nineteenth Amendment
The Ninteenth Amendment was a constitutional amendment passed by Congress in 1919 and ratified in 1920, that gave women the right to vote. -
Eighteenth Amendment
Ratified in 1919, this Constitutional amendment prohibited the manufacture sale, and transportation of alcoholic beverages. Turned into the era known as Prohibition. -
Ku Klux Klan
An extreme secret society founded in the nineteenth century and revived during the 1920s. -
Stock-Market Crash
The dark, panicky day of October 29, 1929 when over 16,410,000 shares of stock were sold on Wall Street. It was a trigger that helped bring on the Great Depression.