The Wealth of Nations by Part 4 Chapter 4 Page 9

The 15th Charles II, c. 7, called An Act for the Encouragement of Trade, had given Great Britain the monopoly of supplying the colonies with all the commodities of the growth or manufacture of Europe; and consequently with wines. In a country of so extensive a coast as our North American and West Indian colonies, where our authority was always so very slender, and where the inhabitants were allowed to carry out, in their own ships, their non-enumerated commodities, at first to all parts of Europe, and afterwards to all parts of Europe south of Cape Finisterre, it is not very probable that this monopoly could ever be much respected; and they probably, at all times, found means of bringing back some cargo from the countries to which they were allowed to carry out one.

They seem, however, to have found some difficulty in