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Warfare which opposing armed forces attack, counterattack, and defend from relatively permanent systems of trenches dug into the ground. When news of trench warfare reached to America it confirmed to the government that they had adopted the right approach of entering the war.
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German boat torpedoed without warning by a German submarine off the south coast of Ireland. The contributed by it was one of the causes of WW1
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It proposed a military alliance between Germany and Mexico. The United States found out and used this as a revenge against Germany for trying to get Mexico to invade us.
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It was an influenza caused by a influenza type A. It killed an estimated 20 million to 50 million victims.
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Fourteen goals of the US in the peace of negotiation of WW1. The Fourteen Points speech was a statement given to Congress by President Woodrow Wilson declaring that WW1 was being fought for a moral cause and calling for peace in Europe.
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Prohibited publishing or opinions that would interfere with US military. The trial case accused Charles Schenck violating the law. Took away the freedom of speech. It targeted socialists.
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The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers. Germany had to pay to repair all the damage of the war
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Th 19th amendment granted the right for women to vote. Women working during the war took over the jobs that were left from the men who left to go fight in the war.