Roman Empire
Transportation and communication

The Empire completely encircled the Mediterranean, which they called "our sea" (Mare Nostrum). Roman sailing vessels navigated the Mediterranean as well as major rivers. Transport by water was preferred where possible, as moving commodities by land was more difficult. Vehicles, wheels, and ships indicate the existence of a great number of skilled woodworkers.

Land transport utilized the advanced system of Roman roads, called " viae ". These roads were primarily built for military purposes, but also served commercial ends. The in-kind taxes paid by communities included the provision of personnel, animals, or vehicles for the cursus publicus, the state mail and transport service established by Augustus. Relay stations were located along the roads every seven to twelve Roman miles, and tended to grow into villages or trading posts. A mansio (plural mansiones) was a privately run service station franchised by the imperial bureaucracy for the cursus publicus. The distance between mansiones was determined by how far a wagon could travel in a day. Carts were usually pulled by mules, travelling about 4 mph.
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