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The 18th Amendment was effective prohibiting the sale and manufacturing of alcohol.
<a href='http://http://history1900s.about.com/od/1920s/p/prohibition.htm' >http://history1900s.about.com/od/1920s/p/prohibition.htm</a -
The 19th Amendment constitiution, granting women that right to vote was signed into law.
http://en.wikipedia.org/wiki/Nineteenth_Amendment_to_the_United_States_Constitution -
http://en.wikipedia.org/wiki/Miss_AmericaMargaret Gorman was the winner of the first pageant.
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Alexander Fleming made the discovery from a discarded, contaminated Petri dish. http://history1900s.about.com/od/medicaladvancesissues/a/penicillin.htm
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http://history1900s.about.com/od/1920s/a/stockcrash1929.htmKnown as Black Tuesday