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A year later Russia signed a peace treaty. Also Germany signed an armistice with the alliens , followed by the treaty of Versailles . The war ended on 11th november 1918.

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A year later Russia signed a peace treaty. Also Germany signed an armistice with the alliens , followed by the treaty of Versailles . The war ended on 11th november 1918.

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the war was also at sea , when German u-boats sank the Lusitania a British ship with American passegers the Usa joined the war on the side of the allies .

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the war was also at sea , when German u-boats sank the Lusitania a British ship with American passegers the Usa joined the war on the side of the allies .

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they used new weapons : machine guns , gas , dreadnoughts , u-boats , planes and airships

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they used new weapons : machine guns , gas , dreadnoughts , u-boats , planes and airships

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The war wasn't as fast as Germany thought and after the battle of the Marne it had to retrea to a line of trenches 

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The war wasn't as fast as Germany thought and after the battle of the Marne it had to retrea to a line of trenches 

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Germany invaded France and Great Britain entered the war.

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Germany invaded France and Great Britain entered the war.

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after the assassination Austria and Germany declared war on Serbia , which was supported by Russia and France 

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after the assassination Austria and Germany declared war on Serbia , which was supported by Russia and France 

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the triple alliance made up of : Austria-Hungary , Germany and Italy.

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the triple alliance made up of : Austria-Hungary , Germany and Italy.

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the triple entente made up of : Russia , France and Great Britain

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the triple entente made up of : Russia , France and Great Britain

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In Europe there were two opposing defensive alliance

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In Europe there were two opposing defensive alliance

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the war broke out after the assassination of archduke Franz Ferdinand the heir to the austro-hungarian throne shot by bosnian serb

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the war broke out after the assassination of archduke Franz Ferdinand the heir to the austro-hungarian throne shot by bosnian serb

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World War First broke out in august 1914

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World War First broke out in august 1914