The importance of the traffic of these provinces admits of being inferred in some measure from the careful provision of the government for the Spanish roads. Between the Pyrenees and Tarraco there have been found Roman milestones even from the last times of the republic, such as no other province of the West exhibits. We have already remarked that Augustus and Tiberius promoted road-making in Spain mainly for military reasons; but the road formed by Augustus at Carthago Nova can only have been constructed on account of traffic, and it was traffic mainly that was served by the imperial highway named after him, and partly regulated, partly constructed anew by him. This road, continuing the Italo-Gallic coast-road and crossing the Pyrenees at the Pass of Puycerda, went thence to Tarraco, then pretty closely followed the coast by way of Valentia as far as the mouth of the Jucar, but thence made right across the interior for the valley of the Baetis,[35] then ran from the arch of Augustus--which marked the boundary of the two provinces, and with which a new numbering of the miles began--through the province Baetica to the mouth of the river, and thus connected Rome with the ocean. This was certainly the only imperial highway in Spain. Afterwards the government did not do much for the roads of Spain; the communes, to which these were soon in the main entrusted, appear, so far as we see, to have provided everywhere--apart from the tableland of the interior--communications to such an extent as was required by the state of culture in the province. For, mountainous as Spain is and not without steppes and waste land, it is yet one of the most productive countries of the earth, both through the abundance of the fruits of the soil and through its riches of wine and oil and metals. To this were early added manufactures, especially in iron wares and in woollen and linen fabrics. In the valuations under Augustus no Roman burgess-community, Patavium excepted, had such a number of rich people to show as the Spanish Gades with its great merchants spread throughout the world; and in keeping with this was the refined luxury of manners, the castanet-players who were here at home, and the Gaditanian songs, which circulated, like those of Alexandria, among the elegant Romans. The nearness of Italy, and the easy and cheap intercourse by sea, gave at this epoch, especially to the Spanish south and east coasts, the opportunity of bringing their rich produce to the first market of the world, and probably with no country in the world did Rome pursue so extensive and constant a traffic on a great scale as with Spain. That Roman civilisation pervaded Spain earlier and more powerfully than any other province, is confirmed by evidence on various sides, especially in respect to religion and to literature. [Sidenote: Religious rites.]