ROBERTO PATRICIO KORZENIEWICZ is Assistant Professor of Sociology at the University of Maryland. His main areas of interest include world-systems theory and social movements in the world-economy.WILLIAM C. SMITH is Professor of Political Science at the Graduate School of International Studies and Senior Research Associate of the North-South Center, both at the University of Miami./e His main areas of interest are democratization and economic restructuring and the political economy of arms production and civil-military relations in Argentina, Brazil, and Chile.