Based on research in ten leading trading nations, The Competitive Advantage of Nations offers the first theory of competitiveness based on the causes of the productivity with which companies compete. Porter shows how traditional comparative advantages such as natural resources and pools of labor have been superseded as sources of prosperity, and how broad macroeconomic accounts of competitiveness are insufficient. The book introduces Porter's "diamond," a whole new way to understand the competitive position of a nation (or other locations) in global competition that is now an integral part of international business thinking. Porter's concept of "clusters," or groups of interconnected firms, suppliers, related industries, and institutions that arise in particular locations, has become a new way for companies and governments to think about economies, assess the competitive advantage of locations, and set public policy.