What can the great crises of the past teach us about contemporary revolutions? Jack Goldstone shows the important role of population changes, youth bulges, urbanization, elite divisions, and fiscal crises in creating major political crises. Goldstone shows how state breakdowns in both western monarchies and Asian empires followed the same patterns, triggered when inflexible political, economic, and social institutions were overwhelmed by cumulative changes in population structure that collided with popular aspirations and state-elite relations. Examining the great revolutions of Europe the...