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The Austrian Hungarian empire wanted more power and used at that time powerful Germany as backing who they had a pact with. So on the 28th of July 1914 the Austrian Hungarians declared war on Serbia who had a pact with Russia, France and Britain, this ment Germany had to fight on two fronts. Soon more and more nations joined in and eventually overpowered the centrel powers (Germany and Austria Hungaria) who were only assisted by Turkey and Bulgaria. Some of the joining forces against the centrel powers were Japan, Romania, Portugal, Greece and USA, China also eventually came along with some South American countries. The rest of the world was very undeveloped back then and therefor could't care less. The war ended on November 11th, 1918.

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13y ago

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