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Assassination of the Archduke
The political objective of the assassination was to break off Austria-Hungary's South Slav provinces so they could be combined into a Yugoslavia.
The assassination led directly to the First World War when Austria-Hungary subsequently issued an ultimatum to the Kingdom of Serbia, which was partially rejected. Austria-Hungary then declared war. -
First Battle of Artois
The battle was the first offensive move on the Western Front by either side after the First Battle of Ypres ended in November 1914. -
Gallipoli Campaign
The peninsula forms the northern bank of the Dardanelles, a strait that provides a sea route to what was then the Russian Empire, one of the Allied powers during the war. -
Italy declares war on Austria-Hungary
Italy had enhanced its diplomatic efforts towards the United Kingdom and France. This was because the Italian government had grown convinced that support of Austria would not gain Italy the territories she wanted: Trieste, Istria, Zara and Dalmatia, all Austrian possessions. -
Germany suspends unrestricted submarine warfare
The prolonged naval conflict between German submarines and the Allied navies in Atlantic water and the seas around the British Isles, the North Sea and the coast of France. -
Battle of the Arges
The Romanians experienced success, taking a large number of prisoners, however, the failure of their reserves to arrive due to the actions of the Romanian General Sosescu, who was a naturalized German, followed by the arrival of German reinforcements led to their weakening and eventual defeat. -
The US declares war on Germany
President Wilson appeared before a joint session of Congress and asked for a declaration of war against Germany in order to "make the world safe for democracy." On April 4, Congress granted Wilson's request. -
Russia: General Kornilov’s coup attempt fails
That purported to strengthen Alexander Kerensky's Provisional Government, but which led to Kerensky eventually having Kornilov arrested and charged with attempting a coup d'état, and ultimately undermined the rule of Kerensky -
Treaty of Versailles
One of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919, exactly five years after the assassination of Archduke Franz Ferdinand.
