Free trade
In literature

We all hear with interest and pleasure of improvements in transportation by water or land; we are all disposed to regard the opening of canals, the building of railways, the deepening of harbors, the improvement of steamships as beneficial. But if such things are beneficial, how can tariffs be beneficial? The effect of such things is to lessen the cost of transporting commodities; the effect of tariffs is to increase it. If the protective theory be true, every improvement that cheapens the carriage of goods between country and country is an injury to mankind unless tariffs be commensurately increased.
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