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His death heightened tensions between Austria-Hungary and Serbia which eventually led to Austria-Hungary declaring war on Serbia. -
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Set off a chain of events pulling major powers into the war for example Germany, Russia, France and Britain. -
Germany declaring war on these powerful nations led to Britain joining the war and clarified the division of the Central Powers and Allies leading to a more widespread war. -
This expanded the war into the Middle East leading to the collapse of the Ottoman Empire. -
Contributed to the growing tensions between U.S. and Germany. -
Was one of the largest and bloodiest battles of World War I which resulted in over 700,000 casualties showing the nature of trench warfare. -
One of the largest battles of World War I was intended to relieve pressure on French forces at Verdun and break though German defenses. 1 million soldiers were wounded or killed. -
The Allies gained some territory they failed to break through the German defense. The Somme was remembered for its high human cost and fuse of tanks. -
This battle caused the deaths of 550,00 French and 450,000 Germans. -
The Zimmerman telegram proposed a military alliance between Germany and Mexico to support Mexico to regain their lost territories from the United states which led to the U.S. public convincing them to join the war against Germany. -
After the events of the Zimmermann Telegram and the targeting of American vessels, the U.S. had enough and severed their ties with Germany. -
Provided a significant boost to the Allied powers and balanced the war in their favor later playing a support role in securing the victory. -
Russia withdrew from WWI after the Russian Revolution which allowed Germany to focus on the Western Front. -
Ended the fighting between Germany and the Allied powers and was a precursor to a peace settlement. -
The Treaty of Versailles ended World War I, and Germany was forced to accept full responsibility for the war. The Treaty reshaped European borders and created the League of Nations.