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  The war is caued due to assationation of the Austrian kings son by a Seribian man. War was declared a month later.
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  The British ship Lusitanina was sunk by a German submarine that had 128 American citizens.
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  The Battle of the Somme was a very important battle in WWI.
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  The Zimmermann Telegram stated that if America joined the war, and Mexico joined the Gerrmans side, they would help get their land back FROM America. The telegram was discovered about a month later.
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  America joins the war on the side of the Allies.
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  Russia leaves the war due to an internal revoulution.
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  Germany agrees to an armstice, or cease-fire.
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  The stock market crash in New York is known as Black Tuesday. It is considered to be one of the causes of the Great Depression.
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  The ten year drought and the dustbowl made farming hard.
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  By 1932, one in four Americans were out of work.
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  Franklin Delano Roosevelt is elected in the worst period of time in the Great Deppresion.
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  The New Deal officially goes into action.
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  The Social Security Act of 1935 provided money to the unemployed, and also provided old age benefits for the retired.
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  At the start of WWII, America was pulled out of the Great Depression.