PREFACE.
CHAPTER I.OPERATION OF GEOGRAPHIC FACTORS IN HISTORY Man a product of the earth's surface--Persistent effect of geographic barriers--Recurrent influences of nature-made highways--Regions of historical similarity--Persistence of climatic influences--Relation of geography to history--Multiplicity of geographic factors--Evolution of geographic relations--Interplay of geographic factors--Direct and indirect effects of environment--Indirect effects in differentiation of colonial peoples--General importance of indirect effects--Time element--Previous habitat--Transplanted religions--Partial response to environment--The larger conception of environment--Unity of the earth and the human race..