Chapter 21 World War I Section 1: The Road to War In 1914, tensions among nations in Europe led to the outbreak of the first world war. President Woodrow Wilson was determined that the U.S. would remain neutral. However, in 1917, a series of events led America to enter the war. Chapter Summary

Chapter 21 World War I Section 2: Supporting the War Effort After Congress declared war in 1917, America had to mobilize its military and economy. The U.S. established a draft to increase the size of its army. Women and African Americans stepped up to fill the labor shortage. The government worked to build public support and suppress criticism of the war. Chapter Summary (continued)

Chapter 21 World War I Section 3: Americans at War Once U.S. troops joined the fighting, they helped bring about a swift victory for the Allies. The armistice that ended the fighting imposed harsh settlements on Germany. By the war’s end, millions of soldiers and civilians had died, and millions more were wounded. Chapter Summary (continued)

Chapter 21 World War I Chapter Summary (continued) Section 4: Shaping the Peace In 1919, the Treaty of Versailles officially ended the war and punished Germany severely. President Wilson urged the U.S. to join a peacekeeping organization called the League of Nations, but he was unsuccessful.

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