Lusitania May 7 1915 German U boats sink Lusitania a British Ocean Liner Over 100 Americans died about 1 200 people total died Unrestricted Submarine Warfare firing at any ship without warning not following international standards of warfare submarines were supposed to give non military ships notice and time to evacuate started in 1915 backed off and then again in early 1917 Zimmerman Telegram January 1917 In a telegram the Germans asked Mexico to invade the US promised Texas in return British intercepted the telegram LOL public outcry Major factor for US entering WW1 April 6 1917 Anti German Hysteria American Protective League APL volunteer detective force who spied on German Americans and gave the information to the Justice Department Internment camps for German resident aliens Anti German language laws burning German books Anti German Violence German stores vandalized ethnic slurs Germans were called Huns by the WASPs Robert Prager was lynched coal miner in Illinois 1918 November 1918 WW1 ended hatred faded Anti German feeling returned during WW2
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