A review of several decades of scholarship on civil war, focusing on the answers to key questions: Why do wars begin? Who fights? How are armed groups organized? How can we end and prevent internal war? A survey of the growing body of macroeconomic and microeconomic evidence to assess the...

Scholars have pointed to ethnic and other social divisions as a leading cause of economic underdevelopment, due in part to their adverse effects on public good provision and collective action. We investigate this issue in post-war Sierra Leone, one of the world’s poorest countries. To...