The larger the area brought under one political control, the less the handicap of internal friction and the greater its economic independence. Vast territory has enabled the United States to maintain with advantage a protective tariff, chiefly because the free trade within its own borders was extensive. The natural law of the territorial growth of states and peoples means an extension of the areas in which peace and coöperation are preserved, a relative reduction of frontiers and of the military forces necessary to defend them,[316] diminution in the sum total of conflicts, and a wider removal of the border battle fields. In place of the continual warfare between petty tribes which prevailed in North America four hundred years ago, we have to-day the peaceful competition of the three great nations which have divided the continent among them. The political unification of the Mediterranean basin under the Roman Empire restricted wars to the remote land frontiers. The foreign wars of Russia, China, and the United States in the past century have been almost wholly confined to the outskirts of their big domains, merely scratching the rim and leaving the great interior sound and undisturbed. Russia's immense area is the military ally on which she can most surely count. The long road to Moscow converted Napoleon's victory into a defeat; and the resistless advance of the Japanese from Port Arthur to the Sungari River led only to a peace robbed of the chief fruits of victory. The numerous wars of the British Empire have been limited to this or that corner, and have scarcely affected the prosperity of the great remainder, so that their costs have been readily borne and their wounds rapidly healed.
Political area and the national horizon.
The territorial expansion of peoples and states is attended by an evolution of their spacial conceptions and ideals. Primitive peoples, accustomed to dismemberment in small tribal groups, bear all the marks of territorial contraction. Their geographical horizon is usually fixed by the radius of a few days' march. Inter-tribal trade and intercourse reach only rudimentary development, under the prevailing conditions of mutual antagonism and isolation, and hence contribute little to the expansion of the horizon. Knowing only their little world, such primitive groups overestimate the size and importance of their own territory, and are incapable of controlling an extensive area. This is the testimony of all travellers who have observed native African states. Though the race or stock distribution may be wide, like that of the Athapascan and Algonquin Indians, and their war paths long, like the campaigns of the Iroquois against the Cherokees of the Tennessee River, yet the unit of tribal territory permanently occupied is never large.
National estimates of area.
Small naturally defined regions, which take the lead in historical development because they counteract the primitive tendency towards excessive dispersal, are in danger of teaching too well their lesson of concentration. In course of time geographic enclosure begins to betray its limitations. The extent of a people's territory influences their estimate of area per se, determines how far land shall be made the basis of their national purposes, fixes the territorial scale of their conquests and their political expansion. This is a conspicuous psychological effect of a narrow local environment. A people embedded for centuries in a small district measure area with a short yardstick. The ancient Greeks devised a philosophic basis for the advantages of the small state, which is extolled in the writings of Plato and Aristotle.[317] Aristotle wanted it small enough, "to be comprehended at one glance of the statesman's eye." Plato's ideal democracy, by rigid laws limiting the procreative period of women and men and providing for the death of children born out of this period or out of wedlock, restricted its free citizens to 5,040 heads of families,[318] all living within reach of the agora, and all able to judge from personal knowledge of a candidate's fitness for office. This condition was possible only in dwarf commonwealths like the city-states of the Hellenic world. The failure of the Greeks to build up a political structure on a territorial scale commensurate with their cultural achievements and with the wide sphere of their cultural influence can be ascribed chiefly to their inability to discard the contracted territorial ideas engendered by geographic and political dismemberment. The little Judean plateau, which gave birth to a universal religion, clung with provincial bigotry to the narrow tribal creed and repudiated the larger faith of Christ, which found its appropriate field in Mediterranean Europe.
Estimates of area in small maritime states.
Maritime peoples of small geographic base have a characteristic method of expansion which reflects their low valuation of area. Their limited amount of arable soil necessitates reliance upon foreign sources of supply, which are secured by commerce. Hence they found trading stations or towns among alien peoples on distant coasts, selecting points like capes or inshore islets which can be easily defended and which at the same time command inland or maritime routes of trade. The prime geographic consideration is location, natural and vicinal. The area of the trading settlement is kept as small as possible to answer its immediate purpose, because it can be more easily defended.[319] Such were the colonies of the ancient Phoenicians and Greeks in the Mediterranean, of the Medieval Arabs and the Portuguese on the east coast of Africa and in India. This method reached its ultimate expression in point of small area, seclusion, and local autonomy, perhaps, in the Hanse factories in Norway and Russia.[320] But all these widespread nuclei of expansion remained barren of permanent national result, because they were designed for a commercial end, and ignored the larger national mission and surer economic base found in acquisition of territory. Hence they were short-lived, succumbing to attack or abandoned on the failure of local resources, which were ruthlessly exploited.