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The Triple Alliance
This alliance was formed in 1882 by the German Empire, the Austro-Hungary and Italy -
Triple entente
This was an alliance between France, Britain and Russia, they were also allied to Greece and Serbia. -
Period: to
Murder of the Archduke Franz Ferdinand (declaration of war)
When the serbian group called the black hand society killed the archduke, the Austro-Hungary Empire declared the war to Serbia