In offering to the public a new History of the United States,—for such the three volumes of the Epochs of American History, taken together, are designed to form,—the aim is not to assemble all the important facts, or to discuss all the important questions that have arisen. There seems to be a place for a series of brief works which shall show the main causes for the foundation of the colonies, for the formation of the Union, and for the triumph of that Union over disintegrating tendencies. To make clear the development of ideas and institutions from epoch to epoch,—this is the aim of the authors and the editor. Detail has therefore been sacrificed to a more thorough treatment of the broad outlines: events are considered as evidences of tendencies and principles. Recognizing the fact that many readers will wish to go more carefully into narrative and social history, each chapter throughout the Series will be provided with a bibliography, intended to lead, first to the more common and easily accessible books, afterward, through the lists of bibliographies by other hands, to special works and monographs. The reader or teacher will find a select list of books in the Suggestions a few pages below.