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As the royal entourage drove through the city. Serbian nationalist Gavrilo Princip stepped from the crowd and shot the Archduke and his wife Sophie.
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Austria-Hungary declared what was expected to be a short war on serbia
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Germany invaded Belgium with the strategy known as the schlieffen plan.
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Germans stop Russian advance
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Allies stop German advance on Paris
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French hold the line in the longest battle in the war
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Disastrous British offensive