One of the most enduring features of the economic history of colonial British North America is that exports were the key to economic success. Whether one looks at the literature about the colonies taken as a whole, or that for any of the major regions, exports loom as the sine qua non of economic growth. Enterprising Europeans arrived in North America and, through hard work and the availability of land, created a prosperous economy based on the export of agricultural staples. On the face of it there is an appealing intuition to this argument. After all trade was why England wanted these colonies in the first place, and the Crown duly recorded the details of that trade and adopted policies aimed at shaping the composition, direction and grow...