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Archduke Franz Ferdinand is assassinated in Sarajevo.
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Austria-Hungary declares war on Serbia
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Germany declared war on Russia.
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World War I Begins
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U.S. President Woodrow Wilson announces the U.S. will remain neutral.
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Sinking of the Lusitania
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Germany sends the secret Zimmerman Telegram to Mexico in an effort to entice Mexico to join the war
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Battle of the Somme
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US Declares War
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End of WW1
