Résumé: Distinguishing four sources of power - ideological, economic, military, and political - this series traces their interrelations throughout human history. This third volume of Michael Mann's analytical history of social power begins with nineteenth century global empires and continues with a global history of the twentieth century up to 1945. Mann focuses on the interrelated development of capitalism, nation-states, and empires. Volume 3 discusses the "Great Divergence" between the fortunes of the West and the rest of the world; the self-destruction of European and Japanese power in two world wars; the Great Depression; the rise of American and Soviet power; the rivalry between capitalism, socialism, and fascism; and the triumph of a reformed and democratic capitalism.