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Murder of Archduke Franz Ferdinand
Bosnian Serb named Gavrilo Princip assassinated Archduke Franz Ferdinand, heir to the Austro-Hungarian throne. -
Declaration of war
Austria-Hungary declared war on 28 th July. -
Germany, France and Britain join the war
Russia came to Serbia's defence, and by 4 th August, Germany, France, and Britain were drawn into the war. -
Other countries join in the war
Bulgaria, Italy, Romania, Greece and others joined in from 1915 onward. -
The United States' entry
The United States entered the war. -
Dissolution of the different empires
The dissolution of the Russian, German, Austro-Hungarian, and Ottoman Empires resulted in the creation of new independent states, including Poland, Finland, Czechoslovakia, and Yugoslavia. -
Collapse of the German frontline
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Armistice of 11th November 1918
The end of the war.