Obviously in attempting to indicate even a portion of the significant features of our recent history we have been obliged to take note of a complex of forces. The times are so close at hand that the relations between events and tendencies force themselves upon our attention. We have had to deal with the connections of geography, industrial growth, politics, and government. With these we must take into consideration the changing social composition, the inherited beliefs and habitual attitude of the masses of the people, the psychology of the nation and of the separate sections, as well as of the leaders. We must see how these leaders are shaped partly by their time and section, and how they are in part original, creative, by virtue of their own genius and initiative. We cannot neglect the moral tendencies and the ideals. All are related parts of the same subject and can no more be properly understood in isolation than the movement as a whole can be understood by neglecting some of these important factors, or by the use of a single method of investigation. Whatever be the truth regarding European history, American history is chiefly concerned with social forces, shaping and reshaping under the conditions of a nation changing as it adjusts to its environment. And this environment progressively reveals new aspects of itself, exerts new influences, and calls out new social organs and functions. I have undertaken this rapid survey of recent history for two purposes. First, because it has seemed fitting to emphasize the significance of American development since the passing of the frontier, and, second, because in the observation of present conditions we may find assistance in our study of the past. It is a familiar doctrine that each age studies its history anew and with interests determined by the spirit of the time. Each age finds it necessary to reconsider at least some portion of the past, from points of view furnished by new conditions which reveal the influence and significance of forces not adequately known by the historians of the previous generation. Unquestionably each investigator and writer is influenced by the times in which he lives and while this fact exposes the historian to a bias, at the same time it affords him new instruments and new insight for dealing with his subject. If recent history, then, gives new meaning to past events, if it has to deal with the rise into a commanding position of forces, the origin and growth of which may have been inadequately described or even overlooked by historians of the previous generation, it is important to study the present and the recent past, not only for themselves but also as the source of new hypotheses, new lines of inquiry, new criteria of the perspective of the remoter past. And, moreover, a just public opinion and a statesmanlike treatment of present problems demand that they be seen in their historical relations in order that history may hold the lamp for conservative reform.