The larger the area which a civilized nation occupies, the more numerous are its points of contact with other peoples, and the less likely is there to be a premature crystallization of its civilization from isolation. Extension of area on a large scale means eventually extension of the seaboard and access to those multiform international relations which the ocean highway confers. The world wide expansion of the British Empire has given it at every outward step wider oceanic contact and eventually a cosmopolitan civilization. The same thing is true of the other great colonial empires of history, whether Portuguese, Spanish, Dutch or French; and even of the great continental empires, like Russia and the United States. The Russian advance across Siberia, like the American advance across the Rockies, meant access to the Pacific, and a modification of its civilization on those remote shores. A large area means varied vicinal locations and hence differentiation of civilization, at least along the frontier. How rapidly the vivifying influences of this contact will penetrate into the bulk of the interior depends upon size, location as scattered or compact, and general geographic conditions like navigable rivers or mountains, which facilitate or bar intercourse with that interior. The Russian Empire has eleven different nations, speaking even more different languages, on its western and southern frontiers. Its long line of Asiatic contact will inevitably give to the European civilization transplanted hither in Russian colonies a new and perhaps not unfruitful development. The Siberian citizen of future centuries may compare favorably with his brother in Moscow. Japan, even while impressing its civilization upon the reluctant Koreans, will see itself modified by the contact and its culture differentiated by the transplanting; but the content of Japanese civilization will be increased by every new variant thus formed. [Sidenote: Politico-economic advantages.]