_How Cost of Production and Cost of Acquisition are Equalized._--The costs of moving goods from place to place--including in these costs commercial charges and duties imposed by governments--are the cause of most of the manufacturing that is done in the region represented by the left side of the diagram, except the production of such articles for immediate or local consumption as are necessarily made at or near the places where they are used.[4] Tailoring, blacksmithing, carpentering, general repairing, etc., would always be done in that region, but many kinds of staple goods capable of being transported would, in the absence of duties on imports, be made chiefly in the region of dense population and cheap labor. [4] There can be no large area from which manufacturing is excluded. The rural hamlet has its blacksmith, wheelwright, and carpenter, its sawmills and gristmills; and manufacturers of sashes, doors, furniture, and many implements abound where agriculture is the general industry. Special advantages for production insure the introduction of other industries, and the advantages of being near to customers is enough to maintain many of them. Repairing must, of course, be done everywhere, and in making some articles for local use it is best that the artisan should be where the customer can always reach him. A large cost of transportation favors local industries, a high degree of productivity in agriculture has an unfavorable influence, and a protective tariff on manufactures reduces the returns from agriculture and favors manufacturing industry.