This student text and teacher's guide are part of a curriculum unit that examines the process and progress of democratic government from ancient Greece and Rome through the beginning of the twenty-first century. Part 1, "What is Democracy?" explores the growth and spread of democratic principles throughout the Western world, with particular emphasis on the U.S. experience. It explains the fundamental principles and tenets of democratic rule and the ways in which modern democracies differ from one another. Part 2, "Democracy 2000," uses a case study method to explore four countries (Russia, Venezuela, Uganda, and Thailand) currently shifting to more democratic forms of government. The text helps students understand the complexity that underlies "democratization" and presents various ways in which the nations of the world are undertaking the challenge. A list of 15 resources for further reading is included. The teacher's guide contains activities, handouts, test items, and an answer key to develop comprehensive lesson plans. (BT)