Although political and legal institutions are essential to any nation's economic development, the forces that have shaped these institutions are poorly understood. Drawing on rich evidence about the development of the American states from the mid-nineteenth to the late twentieth century, this...

A density matrix first principles formalism is extended for use in coupled dynamical systems within the framework of the Zwanzig projection operator technique. Coupled linear integro-differential equations for the reduced density operators of two (or more) dynamical subsystems interacting with...