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  It is a Segregation between black and whites.
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  One of the best restrictions on free immigration prohibiting all immigration of Chinese laborers
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  A torpedo fired the boat by a German submarine and the boat sinked leaving 1,924 dead.
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  Proposed a military between Germany and and Mexico in the beginning if WWI with Germany
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  An act that extended the Espionage act of 1917
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  A fear of a potential rise of communism
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  The 18th amendment banned the sale and drinking of alcohol
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  An american Union and also one of the founding members of the industrial workers of the world.
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  The 19th Amendment gave the right for women to vote.
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  A law that limited the amount of immigrants that could be accepted from any country.
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  A substitute teacher that violated Tennessee's Butler Act.
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  The 20th Amendment sets the dates to when the president's office days end.
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  The 21st Amendment ended proibition