Ely chronicles how "America's first big business" impelled the creation of a vast array of new laws in a country where long-distance internal transport had previously been limited to canals and turnpikes. Railroads, the first major industry to experience extensive regulation, brought about significant legal innovations governing interstate commerce, eminent domain, private property, labor relations, and much more. Much of this development was originally designed to serve the interests of the railroads themselves but gradually came to contest and control the industry's power and exploitativ