This 2004 book is a comparative study of the American legaldevelopment in the mid-nineteenth century. Focusing on Illinois andVirginia, supported by observations from six additional states, thebook traces the crucial formative moment in the development of anAmerican system of common law in northern and southern courts. Theprocess of legal development, and the form the basic analyticalcategories of American law came to have, are explained as theproducts of different responses to the challenge of new industrialtechnologies, particularly railroads. The nature of those responseswas dictated by the ideologies that accompanied the social,political, and economic orders of the two regions. American commonlaw, ultimately, is found to express an emerging model ofcitizenship, appropriate to modern conditions. As a result, theprocess of legal development provides an illuminating perspectiveon the character of American political thought in a formativeperiod of the nation.