This book highlights the attention that policymakers, activists, and the public should pay to internal migration. Although prominent research has analyzed particular types of internal migration, especially urbanization and internally displaced persons (IDPs), the narrow scope of existing studies cannot capture the overlaps of motivation and circumstances that pose serious policy dilemmas. The book is distinctive in examining the full range of modes and motives of internal migration: state-sponsored or unsponsored, coerced or voluntary, land-seeking or market-seeking, urban or rural, and so on. While approaching internal migration holistically, it also emphasizes how it is distinct from international migrations, especially the central role of the state, whose internal divisions and defensive reactions to challenges often play decisive roles in governing migration. The writing style is geared towards accessibility, making it appropriate for college- and graduate-level students as well as the broader public.