The sovereigns of China, those of Bengal while under the Mahometan govermnent, and those of ancient Egypt, are said, accordingly, to have been extremely attentive to the making and maintaining of good roads and navigable canals, in order to increase, as much as possible, both the quantity and value of every part of the produce of the land, by procuring to every part of it the most extensive market which their owndominions could afford.