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World War I - Wikipedia
U.S. Participation in the Great War (World War I) | Progressive Era to New Era, 1900-1929 | U.S. History Primary Source Timeline | Classroom Materials at the Library of Congress | Library of Congress
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The war that did not end at 11am on 11 November - History of government
World War I - Wikipedia
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The First World War: Was it worth it? | HistoryExtra
How did World War One end and what happened next? - BBC Bitesize
World War I - End of the German war and the Armistice | Britannica
Why did the US enter World War I? : News Center
