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Archduke and heir to the Austro-Hungarian throne Francis Ferdinand of Austria was assassinated at the hands of a Serbian terrorist. -
Austria-Hungary declared war on Serbia, Russia, which strongly supported Serbia, declares war on Serbia So Germany comes to the aid of Austria, declaring war on Russia..
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The schieffen plan was a quick war. Germany never imagined that the war would last so long, nor that they would be the losers. -
Japon joins war
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In a quick military campaign, Belgium falls under German rule. -
On May 24, 1915, Italy breaks its pact with the Central Powers, and enters the war supporting the Allies.
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Bulgary joins central powers. -
Trench warfare is becoming more and more devastating, more so than the firearms themselves. UK begins to use poison gas. Germany feels strongly about the North Sea bloc.
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After doing diplomatic work and fulfilling his duties as head of state, Francisco José dies in peace in the middle of world war. -
The Tsarist regime comes to an end with the abdication of Tsar Nicholas II. Likewise, Russia comes out of the war.
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After Zimmemann's telegram is intercepted by British intelligence, the United States decides to join the war using that very thing as a casus beli.
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The last German offensive is carried out. Battle of the hundred days. -
Bulgary ask for armistice after beaing deffeted in several battles. -
After constant defeats in the Middle East and in the Arab revolution, the Ottoman Empire decides to sign an armistice.
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Although it was not formally a surrender, this armistice marked the Allied side as the winner. -
The treaty that would lead to the Second World War is signed.
