These three articles being known, the price of manufacture is determined. It cannot be lower than the amount of all the three, that is, than the real value; whatever it is higher, is the manufacturer’s profit. This will ever be in proportion to demand, and therefore will fluctuate according to circumstances. Hence appears the necessity of a great demand, in order to promote flourishing manufactures. By the extensive dealings of merchants, and their constant application to the study of the balance of work and demand, all the above circumstances are known to them, and are made known to the industrious, who regulate their living and expence according to their certain profit. I call it certain, because under these circumstances they seldom overvalue their work, and by not overvaluing it, they are sure of a sale: a proof of this may be had from daily experience. Employ a workman in a country where there is little trade or industry, he proportions his price always to the urgency of your want, or your capacity to pay; but seldom to his own labour. Employ another in a country of trade, he will not impose upon you, unless perhaps you be a stranger, which supposes your being ignorant of the value; but employ the same workman in a work not usual in the country, consequently not demanded, consequently not regulated as to the value, he will proportion his price as in the first supposition. We may therefore conclude from what has been said, that in a country where trade is established, manufactures must flourish, from the ready sale, the regulated price of work, and certain profit resulting from industry. Let us next inquire into the consequences of such a situation. ------------------------------------------------------------------------ CHAP. V. _How foreign Trade opens to an industrious People, and the consequences of it to_ the Merchants _who set it on foot_. The first consequence of the situation described in the preceding chapter, is, that wants are easily supplied, for the adequate value of the thing wanted. The next consequence is, the opening of foreign trade under its two denominations of passive and active. Strangers and people of distant countries finding the difficulty of having their wants supplied at home, and the ease of having them supplied from this country, immediately have recourse to it. This is passive trade. The active is when merchants, who have executed this plan at home with success, begin to transport the labour of their countrymen into other regions, which either produce, or are capable of producing such articles of consumption, proper to be manufactured, as are most demanded at home; and consequently will meet with the readiest sale, and fetch the largest profits.