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Franz Ferdinand was assassinated on June 28 1914 in Austria-Hungary, by a group of people that wanted to unite Serbia with Austria-Hungary.
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Austria-Hungary declares war on Serbia because of the facct that man that killed the Archduke was Serbian, and killed him for peace, which probably wasn't the best idea.
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Germany declares war on Russia becuase Russia is allied with Serbia, and would attack Germany's allies Austria-Hungaary.
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Germany declares war on France because France is allied with Russia, which Germany just declared war on.
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Germany invades Belgium to try and take out early one of France's allies.
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Great Britain declares war on Germany for attacking one of their allies.
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Germany tried to get to Paris to take over France, but the French, and British halted the Germans and both sides built trenches. The battle hapenned around 20 miles from Paris.
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The British ocean liner RMS Lusitania is sunk by German U-boat. It had around 100 Americans on it too.
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The Battle of Verdun was the longest battle in the history of WWI, and was one of the bloodiest
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On 24 March 1916, one of its submarines - UB-29, mistakenly sank a French cross-channel ferry - the Sussex of 1,350 tons - believing it instead to be a minelayer.
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During the battle of Somme tanks were first introduced into battle.
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Germany sends the secret Zimmerman Telegram to Mexico in an effort to entice Mexico to join the war. The British intercept and decipher the coded message.
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US declares war on Germany because of Germany not listening to peace treaty US is asking.
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The Bolsheviks successfully overthrow the Russian government during the 1917 Russian Revolution.
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Battle of the Argonne Forest, was a part of the final Allied offensive of World War I that stretched along the entire Western Front. It was fought from September 26, 1918, until the Armistice on November 11, a total of 47 days.
