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Heir to the Austro-Hungarian throne, who was killed in sarajevo along with his wife duchess Sphie by Bosnian Serb.
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Austria-Hungry declares war on serbia.
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Four days after Austria-Hungary declared war on Serbia, two more great European powers—Russia and Germany—declare war on each other.
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Germany declares war with France two days after they declared war with Russia
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Germany invaded Belgium to out flank france.
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Germans embarked on a retreat that ended north of the Aisne River, beginning a phase of the war that would be marked by trench warfare.
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less than a year after World War I (1914-18) erupted across Europe, a German U-boat torpedoed and sank the RMS Lusitania.
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The Battle of Verdun in 1916 was the longest single battle of World War One.
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The role of Attack on the Sussex in the history of the United States of America. ... and make provisions for passengers and crews before sinking merchant ships.
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The battle was one of the largest of World War I, in which more than 1,000,000 men were wounded or killed.
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This message helped draw the United States into the war and thus changed the course of history.
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The Russian Revolution is the collective term for a series of revolutions in Russia.
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was a part of the final Allied offensive of World War I that stretched along the entire Western Front.
