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On this day the Austrian Heir and his wife were assassinated by Gavrilo Princip. Eventually, this assassination begin the war between Austria-Hungarian allies and Serbia and its allies, this was the beginning of WWI -
Exactly one month after the Assassination of Archduke Franz Ferdinand and his wife were killed by a Serbian nationalist Austria-Hungary declared a war on Serbia which began the first World War. -
Germany violated Belgium neutrality by invading Belgium. America had declared neutrality at the beginning of what would become the World War. With Great Britain now at war... America, the Dominions of Austria, Canada and New Zealand now all entered WWI -
A German submarine torpedoed the British ship Lusitania without warning.1,197 people died, 128 of those being Americans. -
The French passenger ship sank around Italy due to German submarines. -
Great Britain intercepts a telegram from Germany by Alfred Zimmermann. The had information about an attack on America by the Mexican and German alliance. -
This marked the day that America declared war against Germany and joined in on the conflict in Europe -
An attack by the British on Germany near Messines. This was also the first time Austrian troops were truly in Belgium. This effected America because Britain was their ally and they were fighting along side of them. -
After four years there was armistice between the allies and Germany. This effected America because they were apart of the allies and the war was finally ending -
Germany and the Allies signed a Treaty to officially end the war