In 1914, long-standing rivalries among European nations exploded into war. At first, President Woodrow Wilson tried to keep the United States neutral. However, after several of Germany's actions affected American citizens, the United States entered the war against Germany in 1917.

World War I, as the war is now called, cost millions of lives. After the war ended, Wilson worked hard to build a lasting peace. However, because of conflicts at the peace conference and at home, he was unable to achieve all of his goals.

Additional Activities

• "Why Study History?" Activity: Have students use the Internet to gain an appreciation of what veterans have done for our nation. (See Teacher's Edition, page 659.)
  
  
• Check out the Student Internet Activities, which focus on the causes of World War I.
  
  

Section 1: War Erupts in Europe

Section 2: The United States Enters the War

Section 3: Winning the War

Section 4: Wilson and the Peace