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While driving down a street Archduke Franz Ferdinand and his wife, the Duchess of Hohenberg, were shot and killed by Gavrilo Princip in Sarajevo, Bosnia and Herzegovina. -
Germans created U-boats to attack enemy ships while being underwater and gave them an advantage in navel warfare. -
Propaganda started being used to influence people to join the military, blame the enemy, start rationing food and drinks, and to buy war bonds (U.S only) -
With the use of the machine guns it made it possible to keep enemy troops at bay and prevent them from running into trenches. -
Germans attacked Verdun to spread out the French's power and troops -
During this time people started using chemicals to kill enemy troops that would suffocate them. -
A German U-boat attacked a British ship called the Lusitania, killing 1200 people with 128 of them being American upsetting the U.S. -
British launched an attack in Somme River area to pull the German troops from Verdun -
When the tank was first introduced to the war it allowed troops to flatten their enemy's fortifications. -
A German minister sent a message to Mexico asking them to join their side in the war if the U.S decided to join in return for some land the U.S took from Mexico. -
The U.S decided to join in the war and join the allied forces. -
The Germans used their airship to carry out an air raid on London -
Vladimir Lenin leads the communist Bolsheviks to overthrow the Czar -
A treaty that Russia and the Central Powers signed that ended the Russians participation in the war. -
Signed in the Palace of Versailles outside Paris, France, The Treaty of Versaille made Germany pay for the damages caused by the war, limit their military and lose territory.