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This was the military alliance between Germany, Austria-Hungary, and Italy. Each member promised to protect each other if the other powers were to attack.
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The triple entente was an alliance formed between France, Britain, and Russia. They entered World War I as allies against Germany and Austia-Hungary.
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This is also known as the annexation crisis or the First Balkan crisis. In April 1908 the Treaty of Berlin was signed and this was put to an end.
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Gavrilo Princip assasinated Franz Ferdinand along with his wife. This gave Austria an excuse to attack Serbia leading up to the events of the war.
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A Serbian nationalist assasinated Archduke Franz Ferdinand in June who was heir to the Austria-Hungarian throne. They were convinced the Serbian government had conspired against them so they declared war.
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This was also called the Schlieffen Plan. Germany wanted to defead France before the Russians could mobilize all the way.
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This enraged the Americans. This event helped bring the US closer to joining the war.
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One third of the British troops were killed in the battle. This was one of the largest battles of the war.
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This telegram was from the German sent to Mexico proposing to make war against the US. This note helped draw the US into the war.
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The Zimmerman telegram pushed the US into finally declaring war on Germany. President Wilson asked th congress, then delcared war when they granted it.
