Abstract

Eleventh-century Europe was dominated by a single political and economic elite with position based on control of the means of coercion; by the end of the fifteenth. century there were various elites with power based on control of some form of production. Theories based on trade, population, and the class struggle have been advanced to account for this change but are inadequate because they posit causal relationships running from some single independent factor. A different form of explanation emphasizes the network of relationships among economic and political units. Here economic power is crucial. The development of new technology shifted the economic leverage of the nobility to the mer chants, then to town craftsmen, with detailed effects on all other economic relationships. The argument is primarily theoretical, not a reconstruction of events, and a mathematical model is provided