This argument is somewhat subtle, but probably is the soundest one in the theory of protection. The supposed conditions seldom occur in a marked measure, but they may exist, and probably have existed in America. When the great system of internal transportation was developed in the United States before that of the other new countries (say from 1840 to 1894), this country had such peculiar advantages for the production of food that the quantity was enormously increased and agricultural prices fell.[11] At such a time the tariff may have worked toward checking the fall and earlier reestablishing a more favorable ratio. It did this by making prices of manufactured goods in this country artificially higher and thus tempting men from rural to urban callings. But the limited application of the principle must be recognized. The potential competition of undeveloped countries on all sides, seeking to develop their resources, and profiting by the higher prices of food in the world-market caused by our tariff, threatens the peculiar advantages of the favored land. Russia, Argentina, and Australia have rapidly taken the place of America in supplying food to Western Europe, in part, no doubt, because we refused to take Europe's goods in trade. A great nation with its manifold interests is not eminently fitted to practise the gentle art of monopoly. The period in America from about 1840 to 1890 shows certain absurd contradictions in economic policy. By governmental action, national, state, and municipal, enormous grants of money and lands were made in aid of transportation. Canals, roads, and railways were built into new agricultural territory far faster than was healthy and normal. A prodigal land policy put a premium upon a wastefully rapid extension of the farming area. These things were done to favor the agricultural states, but agricultural prices fell so greatly that our farmers for a long period were nowhere prosperous, and great numbers of them, both in the East and in the West, were ruined. At the same time a high tariff on nearly everything the farmers needed to buy was the political spoil obtained by the Eastern and Middle states. This further depressed the condition of the farmers and forced them or their sons into urban industries. A slower development would have occurred without the waste of national resources in such conflicting policies of artificial stimulation.