The Wealth of Nations by Part 4 Chapter 7 Page 106

The surplus produce of America, imported into Europe, furnishes the inhabitants of this great continent with a variety of commodities which they could not otherwise have possessed; some for conveniency and use, some for pleasure, and some for ornament, and thereby contributes to increase their enjoyments.

The discovery and colonization of America, it will readily be allowed, have contributed to augment the industry, first, of all the countries which trade to it directly, such as Spain, Portugal, France, and England; and, secondly, of all those which, without trading to it directly, send, through the medium of other countries, goods to it of their own produce; such as Austrian Flanders, and some provinces of Germany, which, through the medium of the countries before mentioned, send to it a considerable quantity of linen and other goods.