The Wealth of Nations by Part 4 Chapter 7 Page 215

The countries which possess the colonies of America, and which trade directly to the East Indies, enjoy, indeed, the whole show and splendour of this great commerce. Other countries, however, notwithstanding all the invidious restraints by which it is meant to exclude them, frequently enjoy a greater share of the real benefit of it. The colonies of Spain and Portugal, for example, give more real encouragement to the industry of other countries than to that of Spain and Portugal. In the single article of linen alone the consumption of those colonies amounts, it is said, but I do not pretend to warrant the quantity, to more than three millions sterling a year.

But this great consumption is almost entirely supplied by France, Flanders, Holland, and Germany. Spain and Portugal furnish but a small part of it.