The centrality of the territory between the Douro and Minho Rivers and its confluence of natural routes helped the development of economic activities and favoured the assimilation of the Roman political organization and the development of long distance commerce.
Bracara Augusta was an important commercial town which strongly benefited from an intense and well organized maritime traffic that connected the different centres of production of the Roman Empire. Here, it was possible to find imported necessities and expensive goods of high quality for an urban elite. Among these products we should give special importance to ceramics, glassware and certain luxury products such as food, wine, fish preparations and oil.
The circulation of money in this region began in the period of Augustus (31 – 14 BC) with the appearance of ‘caetra’ coins, which till the middle of the 1st century, were progressively replaced by municipal issues from the Ebro valley.
In the 3rd century the circulation of money both in western and eastern workshops increased because of the reform of the monetary system.
Several monetary treasures were discovered among which the one from Carvalheiras from the 4th century is.
The geo-strategic position of Bracara Augusta as an important market town has since early times favoured the settlement of workshops specialized in pottery, metallurgy, glass production and the smelting of bronze and gold and iron as well as textile industries and the production of pigments.
Although these workshops were mainly located on the outskirts of the city, vestiges of some of them have also been found in the interior of Bracara Augusta.
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