World War One timeline of events in 1915
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World War One | The British Library
April 1917: America entered the first World War | Article | The United States Army
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World War 1 Pictures | Download Free Images on Unsplash
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World War I and World War II Photographs in the National Archives | National Archives
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How America Saved the Day in World War One | Time
Why World War I Matters to Today's Economy - The New York Times
What was the impact of World War I in shaping the modern world?
World War 1
