Man's social and political life depends much on the physical conditions by which he is surrounded. We have only to instance a mountain and valley population. The former is isolated and out of the way, and the people simple, uncouth, and uncultivated—contented, it is true, but, nevertheless, enjoying but little of the abundance and variety in which people of culture luxuriate. The valley population have a city, villages, rich lands, trade, and commerce; they are wealthy, cultivated, and realize far more the legitimate fruition of our entire nature.
Even missionaries, whose prejudices may be presumed to have been in favor of purely moral means, tell us that that heathen can only be permanently Christianized through changes in their physical conditions which commerce alone can bring about.
Physical conditions affect the destiny of nations, and go far to determine the extent and character of political organizations. It makes a great difference whether a country has or has not the means of ready communication and transportation from one section to another. While the great body of Europe was comparatively uncultivated, with only the natural channels of commerce, and these unimproved, there could be little communication between the different sections of country; and Europe had no political or social unity. The people of the entire continent were in a fragmentary and disorganized mass, comparatively isolated, and independent of each other. The jurisdictions of the great barons and of the cities became at length united into kingdoms. The increase of commerce brought these kingdoms into relations with each other, and diplomacy grew out of national necessities. As the countries improved and the facilities and occasions for intercommunication and commerce increased, the principle of political unity must needs comprehend a wider range. At first, it took in only the component parts of kingdoms, and then the kingdoms in the form of great national leagues of more or less permanence. This form of political unity may be very imperfect, but it is nevertheless unity consummated in the best possible manner which the system of separate thrones would permit. Changes in the conditions and relations of peoples render changes in their political forms an absolute necessity. The facilities for education, intercommunication, travel, and commerce, are the great unitizers of peoples and nations.
A great, overgrown empire, which has been built up by arbitrary power, may fall to pieces, because it is not bound together by the ligaments which an ubiquitous commerce affords. Another, because thus interlaced and woven together, cannot be sundered. The dependence of part on part and the facilities of transportation from one section to another, render such an empire a really vital organism, which cannot be divided without destroying the whole; but since nations, as individuals, are tenacious of life, the whole cannot be destroyed, and the empire cannot be divided. There is no place for division, and none can be made. This principle, we believe, applies to our own country.
Lines for the transmission of intelligence, the highways of travel, the channels of intercommunication and commerce—these connect remote sections with each other, and, in connection with the specialization of industry, cause them to become mutually dependent, and thus form a web of unity knitting the many into one. The Mississippi River has been characterized by some one as a great original Unionist. It is so.
The channels and highways of commerce are of two kinds: natural and artificial. The natural are the seas, lakes, rivers; and these only become the means of political union according to the extent of the use which is made of them. The improvement of harbors and of rivers, and the modern revolutions in the art of navigation, have greatly increased their power to make one section necessary to another, and bind people to people. Were not steam applied to locomotion, the great rivers of North America would afford far less of promise for American unity than they now do.
Since whatever facilitates communication and transportation makes one class of people dependent on another, through the mutual exchange of social opportunity and of industrial productions, and binds them more firmly together; hence, also, the political and social values of the artificial channels of commercial intercourse. Wagon roads, canals, railroads, telegraphs, are all so many political unitizers; but the railroad, with its accompaniment, the telegraph, may be regarded as the chief of all.
Let us notice for a moment the political value of our rivers, with the improved navigation of the same, and of our railroads, in the suppression of the existing rebellion.
Had there been no navigable rivers and no railroads uniting the North and South, the chances for the local division of our country would be far greater than they are under existing circumstances. The South would have been comparatively isolated from the North, and our armies could not have reached her territory with the facility they now do. Prolonged for years, as the war must have been under such circumstances, the North would have grown weary of prosecuting it; the chances for intervention would have been greater, and the establishment of a Southern nation by no means an impossible thing.
With facilities for penetrating the country, it may be easier to reduce a dozen rebel States than one quarter of the territory if held by uncivilized Indians. We were longer subjugating the Seminole Indians than we are likely to be in putting down the rebellion. The facilities of transportation in the one case, and their absence in the other, make part of the difference. Besides, these same facilities and their accompaniments render Southern society a really vital and sensitive thing, so that a wound in some vital part, as Vicksburg or Chattanooga, is felt to the remotest ends of Secessia. It will not require extermination of all the members; a few mere such wounds, and the rebellious creature will have to yield.