This student booklet and teacher's guide analyze the roots of the conflict resulting in the Yugoslav War in 1991 and examine the impact nationalism is having on European stability. The first section of the student booklet defines nationalism and traces its prominent role in inciting World War I and World War II. The second section describes how Yugoslavia was driven into civil war and surveys the devastation the war has brought to its people. The third section details the West's unsuccessful attempts at brokering a peace agreement and examines the debate over U.S. military intervention in the conflict. The last section highlights other parts of eastern Europe that are falling victim to renewed nationalism and asks what the global community can do in the future to contain this powerful and often destructive force. Chapter titles include: (1) "Nationalism Rising"; (2) "Nationalism: Ghosts from the Past"; (3) "Yugoslavia: 'Self-Determination Gone Mad'"; (4) "The World Edges toward Intervention"; and (5) "The Balkanization of Europe." Seven bibliographic references for further reading conclude the text. The teacher's guide contains lesson plans to be used in conjunction with the student booklet, and includes objectives, a list of key terms, a motivator activity, student activities and handouts, and test materials with an answer key. (EH)