War Affects the World Key Idea 3 HOME 3 War Affects the World Key Idea The Allies expand the war beyond Europe. The United States enters the conflict. Citizens undergo rationing, and many women go to work in factories. Fresh American troops give the Allies an edge. The Kaiser abdicates, and an armistice is signed. Overview Assessment

War Affects the World Overview 3 • unrestricted submarine warfare HOME 3 War Affects the World TERMS & NAMES Overview • unrestricted submarine warfare • total war • rationing • propaganda • armistice MAIN IDEA WHY IT MATTERS NOW World War I spread to several continents and required the full resources of many governments. The war propelled the United States to a new position of international power, which it retains today. Assessment

HOME 3 War Affects the World Section 3 Assessment 1. Look at the graphic to help organize your thoughts. List the reasons why the United States entered World War I. Reasons for United States Entry 1. 2. 3. 4. Germans sink Lusitania, a British ship carrying some American passengers. Germany returns to unrestricted submarine warfare, sinking U.S. ships. Zimmermann note decoded—German note urging Mexico to take up arms against U.S. Strong feelings of sympathy for the Allies continued . . .

HOME 3 War Affects the World Section 3 Assessment 2. In what ways was World War I truly a global conflict? THINK ABOUT • where the war was fought • who participated in the war effort ANSWER Possible Response: The war was fought in numerous places outside Europe: Africa, Southwest Asia, China, and the Pacific. People from many nations participated in the war effort, including colonial subjects throughout Africa and Asia. continued . . .

HOME 3 War Affects the World Section 3 Assessment 3. How did the concept of total war affect the warring nations’ economies? THINK ABOUT • the governments’ new role in their economies • the scarcity of food and other products • the role of women • unemployment rates during the war years ANSWER Possible Responses: Governments took greater control of economies, telling factories what and how much to produce. Civilian factories were turned into munitions factories. Rationing was common. Women became a significant part of the work force. More people were put to work. End of Section 3