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Schlieffen Plan was created in 1905 to avoid an attack from both fronts on Germany, this plan was not executed until 1914 during WWI
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The assassionation of Arch Duke Francis Ferdinand was commited by Gavrila Princip a terrorist of the Black Hand.
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Austria sent an unrealistic ultimatum to Serbia stating demands that Serbia could not meet.
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Since Serbia could not meet the demands of the Austrian ultimatium, war erupted in Europe causing the start of WWI.
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Germany invaded Belgium making Britian declare war and starting WWI.
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The Ottoman empire joins WWI as part of the central power allience.
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US joins WWI and sides with the Allies. They joined the war because of Germany's secret message to Mexico.
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Russia leaves the war to fight for their homeland in the revolution that the Allies wanted to lead to democracy.
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An agreement to end all the killing of WWI and present day, citizens in the US call it vetern day.
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Was a treaty to end WWI and put the Central Powers on the losing side.
