Research on the Creation of American Constitutionalism

America is a typical nation of implementing constitutionalism.As a typical democratic system,the constitutionalism is created in the long term of politic operations.Popular sovereignty and limited power government are the thought foundation of the American constitution;the succession and development of British constitutionalism tradition and the systematic tradition of North American colonial period are the historic reason of the American constitutionalism;and the social need of the capitalism is the decisive reason of the creation of American constitutionalism.The basic principles of the American constitutionalism include popular sovereignty,fundamental human rights,state power division and balance and the rule of law.