In Constitutionalism and the Separation of Powers, M. J. C. Vile traces the history of the doctrine from its rise during the English Civil War, through its development in the eighteenth century?through subsequent political thought and constitution-making in Britain, France, and the United States.M. J. C. Vile is Professor Emeritus of Political Science at the University of Kent at Canterbury and author of The Structure of American Federalism.