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The Triple Alliance brought Italy into the alliance already agreed upon by Germany and Austria-Hungary. In this treaty, it stated that Germany and Austria-Hungary would help Italy if they were attacked by France, and vice versa
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The Entente powers were the opposition to the Central Powers (Austria-hungary and Germany). The Entente alliance came from the many worries of the military they signed an alliance based on fears of growing German power.
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He and his wife were visiting Serbia when they were killed by Gavrillo Princip. They had already survived an assissination attempt earlier that day.
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Austria-Hungary had sent a telegram to Serbia to which they did not reply in a satisfying way. The telegram was actually Austira-Hungary warning Serbia about calling war on them
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Germany gave Belgium an "ultimatum" requesting permission to march through the country on their way to Paris. Germany even told Belgium that their government would face no harm if their request was granted.
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The Lusitania was part of the "High Seas Fleet" and was sent on commerce raiding missions in 1915. The morning it was hit off the coast of Ireland the captain, Walter Schweiger, fired a one "G-type" torpedo ending up being the last one he had. It striked forward of the bridge on its starboard side.
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The battle is famous for the amount of loss they had in it (58,000 British troops.The British and the French came together for their planned attack against the opposition.
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The Zimmermann note was an letter sent by Zimmermann, Germany's Secretary of Foreign Affairs, the Minister in Mexico, directing him to attempt to unite Mexico and Japan with Germany in war against the United States. The letter was intercepted by the United States services on the Texas borders.
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United States president, Woodrow Wilson declared war in a speech to the public to inform them. It wasn't until 4 days later when a formal declaration of war was formed.
