Recent trade initiatives suggest that there is renewed interest in forming tariff-free regional trading zones. Running concurrent with this move toward regional integration is the multilateral process of global trade liberalization. This text looks at the two issues. Chapter one examines the inherent conflict between the two main approaches to reducing barriers to trade - economic integration, and multilateralism. Chapter two provides a theoretical framework for evaluating the relative accomplishments of both regional trading blocs and multilateral free trade. Chapter three utilizes a number of theoretical constructs to evaluate the effects of regional trading arrangements, and discusses the trade history of the European Union. Chapter four provides an analysis of the trade effects of tariff reductions achieved under the GATT system, and chapter five provides recommendations for ensuring continued progress in multilateral tariff reductions under the banner of the World Trade Organization.