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Archduke Franz Ferdinand and his wife were was assassinated by Gavrilo Princip, a member of the Black Hand, in Sarajevo, Austria-Hungary. -
Austria-Hungary gave Serbia one month to make reprimandations for the assassination, but Serbia did not act. Then Austria-Hungary declared war. -
Russia declares its support for Serbia and announces troop mobilization. -
Germany declares war on Russia. This is part of the Schlieffen Plan. -
Germany declares war on France. This is the second part of the Schlieffen Plan. -
Germany invades Belgium. Germany went through the country of Belgium to invade France. -
Great Britain Declares War on Germany. This is a result from Germany not removing its troops from Belgium, who was a neutral country. -
The Lusitania was a British cruise liner that was on its way to LIverpool. A German U-boat then sank it killing almost 2,000, including 123 Americans. -
The US enters the war because of the americans killed on the Lusitania. -
Russia signs the Treaty of Brest-Litovsk with Germany and withdraws from the war. -
The Treaty of Versailles is signed and the war is declared to be over. Many restrictions and the blame is placed on Germany and this is one of the main causes for the second world war.