10's See Also : First World War * 1914 - The Archduke Franz Ferdinand, heir to the Austro-Hungarian throne was murdered by a Serbian nationalist. The Austro-Hungarian empire declares war on Serbia and Montenegro, but the Russian Empire feels that they must help to its “Slavic brothers” in the war, so it declares war on Austria-Hungary the same year. Later, Germany declares war on Russia to help its ally. Then the Ottoman empire declares war on the Triple Entente (Russia, France and England) at the same time they declare war on the central powers (Ottoman, Austro-Hungarian and German empires). * 1915 - The European war becomes global. * 1917 - Russia withdraws from the war because of the Bolshevik movement. Six months later the Whites (Russian Empire) defeated the Reds (Communists