Commerce on the Castilian-Portuguese frontier: The Extremadura area (13th-15th centuries)

The development of frontier commerce between Extremedura and Portugal from the mid-thirteenth century. The celebration of fairs alongside frontier castles. The development of markets free from taxes ('francos') in the fifteenth century. Data proceeding from customs tariffs. Roads, customs points ('dry ports'), the repression of contraband by the 'alcaldes de sacas'. The importance of noble lordships and the predominance of agricultural products and livestock in mercantile traffic.