A chart of isothermal lines.
CHAPTER V
TRANSPORTATION—OCEAN AND INLAND NAVIGATION
Of all the adjustments which come into the lives of a people none has been so far-reaching as the gradual localization of industries each in the region best adapted to it. For instance, manufacturing industries require power, but not fertile soil; therefore the manufacturing industries seek nearness to fuel or to water-power, and a position available for quick transportation.
Farming does not require any great amount of natural power; on the contrary, level land having a great depth of fertile soil is the essential feature. The farmer must therefore look first of all to conditions of topography and climate, and secondly to the means of transporting his crop.
Mining cannot be an industry in regions destitute of minerals; the miner must therefore go where the mineral wealth is found, without regard to climate, soil, centres of population, or topography. But two things are required—the mineral products and the means of getting them to the people—that is, ready means of transportation.
A century or more ago, each centre of population in the United States was practically self-sustaining. Each grew its own food-stuffs, and manufactured the articles used in the household. But very little was required in the way of transportation. The means of carriage were mainly ox-carts, pack-horses, and rafts. There was a mutual independence among the various centres, it is true, but the independence was at the expense of civilization and the comforts of life.