Trager and her coauthors focus on migration not as a single event but as a dynamic process that responds to and is shaped by broader economic, cultural and social forces. Individual essays consider issues of international and internal migration, of voluntary migration and forced movements due to civil conflicts and environmental degradation, and of macro-level forces and micro-level institutions. The authors investigate a wide variety of types of mobility, describe transnational and multilocal networks through which remittances and other flows take place; focus on migrants as active agents;...