True or False 1. Trench warfare was rarely used during World War I.
2. American Expeditionary Force was a group that included men from one regional part of the country.
3. The Treaty of Versailles established nine new nations, including Poland, Czechoslovakia, and Yugoslavia—and shifted the boundaries of other nations.
4. Zimmermann note was a telegram from the German foreign minister to the German ambassador in Mexico that was intercepted by British agents.