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Involvement in World War I and II Only about two hundred years old, the United States had developed into a major world power by the beginning of the 20th Century. ... This message was known as the "Zimmerman note" ("World War I", www.aolsvc. worldbook.aol.com). The note revealed the Germans were planning to make an alliance with Mexico. ... About two million men were sent away over seas in the American Expeditionary Force. ...
- Word Count: 3869
- Approx Pages: 15
- Grade Level: High School