An Inquiry Into the Nature and Causes of the Wealth of Nations

by Adam Smith; M. Garnier

All wholesale trade, all buying in order to sell again by wholesale, may be reduced to three different sorts: the home trade, the foreign trade of consumption, and the carrying trade. The home trade is employed in purchasing in one part of the same country, and selling in another, the produce of the industry of that country. It comprehends both the inland and the coasting trade. The foreign trade of consumption is employed in purchasing foreign goods for home consumption. The carrying trade is employed in transacting the commerce of foreign countries, or in carrying the surplus produce of one to another.

The capital which is employed in purchasing in one part of the country, in order to sell in another, the produce of the industry of that country, generally replaces, by every such operation, two distinct capitals, that had both been employed in the agriculture or manufactures of that country, and thereby enables them to continue that employment. When it sends out from the residence of the merchant a certain value of commodities, it generally brings back in return at least an equal value of other commodities. When both are the produce of domestic industry, it necessarily replaces, by every such operation, two distinct capitals, which had both been employed in supporting productive labour, and thereby enables them to continue that support. The capital which sends Scotch manufactures to London, and brings back English corn and manufactures to Edinburgh, necessarily replaces, by every such operation, two British capitals, which had both been employed in the agriculture or manufactures of Great Britain.

The capital employed in purchasing foreign goods for home consumption, when this purchase is made with the produce of domestic industry, replaces, too, by every such operation, two distinct capitals; but one of them only is employed in supporting domestic industry. The capital which sends British goods to Portugal, and brings back Portuguese goods to Great Britain, replaces, by every such operation, only one British capital. The other is a Portuguese one. Though the returns, therefore, of the foreign trade of consumption, should be as quick as those of the home trade, the capital employed in it will give but one half the encouragement to the industry or productive labour of the country.

But the returns of the foreign trade of consumption are very seldom so quick as those of the home trade. The returns of the home trade generally come in before the end of the year, and sometimes three or four times in the year. The returns of the foreign trade of consumption seldom come in before the end of the year, and sometimes not till after two or three years. A capital, therefore, employed in the home trade, will sometimes make twelve operations, or be sent out and returned twelve times, before a capital employed in the foreign trade of consumption has made one. If the capitals are equal, therefore, the one will give four-and-twenty times more encouragement and support to the industry of the country than the other.

The foreign goods for home consumption may sometimes be purchased, not with the produce of domestic industry, but with some other foreign goods. These last, however, must have been purchased, either immediately with the produce of domestic industry, or with something else that had been purchased with it; for, the case of war and conquest excepted, foreign goods can never be acquired, but in exchange for something that had been produced at home, either immediately, or after two or more different exchanges. The effects, therefore, of a capital employed in such a round-about foreign trade of consumption, are, in every respect, the same as those of one employed in the most direct trade of the same kind, except that the final returns are likely to be still more distant, as they must depend upon the returns of two or three distinct foreign trades. If the hemp and flax of Riga are purchased with the tobacco of Virginia, which had been purchased with British manufactures, the merchant must wait for the returns of two distinct foreign trades, before he can employ the same capital in repurchasing a like quantity of British manufactures. If the tobacco of Virginia had been purchased, not with British manufactures, but with the sugar and rum of Jamaica, which had been purchased with those manufactures, he must wait for the returns of three. If those two or three distinct foreign trades should happen to be carried on by two or three distinct merchants, of whom the second buys the goods imported by the first, and the third buys those imported by the second, in order to export them again, each merchant, indeed, will, in this case, receive the returns of his own capital more quickly; but the final returns of the whole capital employed in the trade will be just as slow as ever. Whether the whole capital employed in such a round-about trade belong to one merchant or to three, can make no difference with regard to the country, though it may with regard to the particular merchants. Three times a greater capital must in both cases be employed, in order to exchange a certain value of British manufactures for a certain quantity of flax and hemp, than would have been necessary, had the manufactures and the flax and hemp been directly exchanged for one another. The whole capital employed, therefore, in such a round-about foreign trade of consumption, will generally give less encouragement and support to the productive labour of the country, than an equal capital employed in a more direct trade of the same kind.

Whatever be the foreign commodity with which the foreign goods for home consumption are purchased, it can occasion no essential difference, either in the nature of the trade, or in the encouragement and support which it can give to the productive labour of the country from which it is carried on. If they are purchased with the gold of Brazil, for example, or with the silver of Peru, this gold and silver, like the tobacco of Virginia, must have been purchased with something that either was the produce of the industry of the country, or that had been purchased with something else that was so. So far, therefore, as the productive labour of the country is concerned, the foreign trade of consumption, which is carried on by means of gold and silver, has all the advantages and all the inconveniences of any other equally round-about foreign trade of consumption; and will replace, just as fast, or just as slow, the capital which is immediately employed in supporting that productive labour. It seems even to have one advantage over any other equally round-about foreign trade. The transportation of those metals from one place to another, on account of their small bulk and great value, is less expensive than that of almost any other foreign goods of equal value. Their freight is much less, and their insurance not greater; and no goods, besides, are less liable to suffer by the carriage. An equal quantity of foreign goods, therefore, may frequently be purchased with a smaller quantity of the produce of domestic industry, by the intervention of gold and silver, than by that of any other foreign goods. The demand of the country may frequently, in this manner, be supplied more completely, and at a smaller expense, than in any other. Whether, by the continual exportation of those metals, a trade of this kind is likely to impoverish the country from which it is carried on in any other way, I shall have occasion to examine at great length hereafter.

That part of the capital of any country which is employed in the carrying trade, is altogether withdrawn from supporting the productive labour of that particular country, to support that of some foreign countries. Though it may replace, by every operation, two distinct capitals, yet neither of them belongs to that particular country. The capital of the Dutch merchant, which carries the corn of Poland to Portugal, and brings back the fruits and wines of Portugal to Poland, replaces by every such operation two capitals, neither of which had been employed in supporting the productive labour of Holland; but one of them in supporting that of Poland, and the other that of Portugal. The profits only return regularly to Holland, and constitute the whole addition which this trade necessarily makes to the annual produce of the land and labour of that country. When, indeed, the carrying trade of any particular country is carried on with the ships and sailors of that country, that part of the capital employed in it which pays the freight is distributed among, and puts into motion, a certain number of productive labourers of that country. Almost all nations that have had any considerable share of the carrying trade have, in fact, carried it on in this manner. The trade itself has probably derived its name from it, the people of such countries being the carriers to other countries. It does not, however, seem essential to the nature of the trade that it should be so. A Dutch merchant may, for example, employ his capital in transacting the commerce of Poland and Portugal, by carrying part of the surplus produce of the one to the other, not in Dutch, but in British bottoms. It may be presumed, that he actually does so upon some particular occasions. It is upon this account, however, that the carrying trade has been supposed peculiarly advantageous to such a country as Great Britain, of which the defence and security depend upon the number of its sailors and shipping. But the same capital may employ as many sailors and shipping, either in the foreign trade of consumption, or even in the home trade, when carried on by coasting vessels, as it could in the carrying trade. The number of sailors and shipping which any particular capital can employ, does not depend upon the nature of the trade, but partly upon the bulk of the goods, in proportion to their value, and partly upon the distance of the ports between which they are to be carried; chiefly upon the former of those two circumstances. The coal trade from Newcastle to London, for example, employs more shipping than all the carrying trade of England, though the ports are at no great distance. To force, therefore, by extraordinary encouragements, a larger share of the capital of any country into the carrying trade, than what would naturally go to it, will not always necessarily increase the shipping of that country.

The capital, therefore, employed in the home trade of any country, will generally give encouragement and support to a greater quantity of productive labour in that country, and increase the value of its annual produce, more than an equal capital employed in the foreign trade of consumption; and the capital employed in this latter trade has, in both these respects, a still greater advantage over an equal capital employed in the carrying trade. The riches, and so far as power depends upon riches, the power of every country must always be in proportion to the value of its annual produce, the fund from which all taxes must ultimately be paid. But the great object of the political economy of every country, is to increase the riches and power of that country. It ought, therefore, to give no preference nor superior encouragement to the foreign trade of consumption above the home trade, nor to the carrying trade above either of the other two. It ought neither to force nor to allure into either of those two channels a greater share of the capital of the country, than what would naturally flow into them of its own accord.

Each of those different branches of trade, however, is not only advantageous, but necessary and unavoidable, when the course of things, without any constraint or violence, naturally introduces it.

When the produce of any particular branch of industry exceeds what the demand of the country requires, the surplus must be sent abroad, and exchanged for something for which there is a demand at home. Without such exportation, a part of the productive labour of the country must cease, and the value of its annual produce diminish. The land and labour of Great Britain produce generally more corn, woollens, and hardware, than the demand of the home market requires. The surplus part of them, therefore, must be sent abroad, and exchanged for something for which there is a demand at home. It is only by means of such exportation, that this surplus can acquire a value sufficient to compensate the labour and expense of producing it. The neighbourhood of the sea-coast, and the banks of all navigable rivers, are advantageous situations for industry, only because they facilitate the exportation and exchange of such surplus produce for something else which is more in demand there.