Although the political presence of business in the economic development of American cities has been richly documented, there has been much less attention to how and why urban business politics has changed in the course of our history. Indeed, the political circumstances and problems of the early Republic's merchant entrepreneurs in the towns seem remote from those of urban business leaders of postindustrial America, with its giant cities and megacorporations. The challenge remains of identifying forces of continuity and change that have shaped relations between business and city governments in urban economic development.