The Wealth of Nations by Part 4 Chapter 7 Page 161

The natural good effects of the colony trade, however, more than counterbalance to Great Britain the bad effects of the monopoly, so that, monopoly and all together, that trade, even as it carried on at present, is not only advantageous, but greatly advantageous. The new market and the new employment which are opened by the colony trade are of much greater extent than that portion of the old market and of the old employment which is lost by the monopoly. The new produce and the new capital which has been created, if one may say so, by the colony trade, maintain in Great Britain a greater quantity of productive labour than what can have been thrown out of employment by the revulsion of capital from other trades of which the returns are more frequent.

If the colony trade, however, even as it is carried on at present, is