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1918 - The War Time Prohibition Act is passed to save grain for the war effort during world war 1
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1920's - The rise of bootleggers such as Al Capone in Chicago highlight the darker side of prohibition.
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The Warren G. Harding Administration (Republican 1921-1923, died in office
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elevision ----- 1924 Scotland by John Logie Baird
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Aerosol Sprays ----- 1926 Norway by Erik Rotheim
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Videophone ----- 1927 USA
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Electric Razor ----- 1927 USA by Jacob Schick
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Antibiotic Penicillin ----- 1928 England by Alexander Fleming
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1929 - Elliot Ness begins in earnest to tackle violators of prohibition and Al Capone's gang in Chicago
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The Stock Market Crash of 1929