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        Prohibition begins which is when the sale, manufacturer, and transportation of alcohol was banned (18th amendment) - 
  
  
        The US fails to ratify the Treaty of Versailles and joins the UN - 
  
  
        The 19th amendment was passed and no US citizen can be denied to vote - 
  
  
        Sheppard-Towner Maternity Act of 1921 provided federally financed instruction in maternal and infant health care - 
  
  
        Secretary of state Charles Evans Hughes initiated talks on naval disarmament, hoping to stabilize the size of the US navy - 
  
  
        Representative Joseph W Fordney and senator Porter J McCumber guided this legislation through congress. Tariffs raised above the level set in 1913 and also authorized the president to raise or lower a given tariff rate by 50% in order to even out production costs. - 
  
  
        Britain, France, Italy, Japan, and the US concluded an agreement that intended to slow the Naval arms race and reduce the chance for future wars. - 
  
  
        The Immigration Act of 1924 limited the number of immigrants allowed entry into the US through a national origins quota. - 
  
  
        Dawes Plan was an attempt to collect war reparations from Germany .After five years it showed to be unsuccessful and pointless. - 
  
  
        John Scopes challenged the states ban on teaching Charles Darwin's theory of evolution in public schools. - 
  
  
        The march in Washington DC 35,000 KKK members preached Americanism based on racism, anti-catholicism, anti-communism, nativism, and anti-semitism. - 
  
  
        The trial of Ferdinando Nicola Sacco and Bartolomeo Vanzetti was a highly politicized dispute - 
  
  
        The General Treaty for the Renunciation of war focused on trying to outlaw war between Italy, Japan, Germany, UK, France, and the US. This is also known as the Kellogg-Briand Pact. - 
  
  
        Four men (supposedly part of Al Capone's gang) went into a warehouse, where they then open fired on the Morans and killed seven. - 
  
  
        Increased use of buying stocks "on margin" caused the stock market crash, which devastated the economy and is one of the leading factors into the Great Depression.