International Trade, Comparative Advantage, and Protectionism   Objectives   Self-Study Quizzes   Trade Surpluses and Deficits   The Economic Basis for Trade:...   The Sources of Comparative Advantage   Trade Barriers: Tariffs, Export...   Free Trade or Protectionism?   An Economic Consensus   Homework   Active Graphs Level One   Active Graphs Level Two   Glossary   Summary   Chapter Notes   eThemes