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 of Augustus and of Tiberius, the policy of the first century A.D. In short, this was but the idea of the old aristocratic party, adapted to the new times.

So the Roman Government gave itself little concern at this time for the provinces, nor did it build in them any considerable public work. It did not construct roads, nor canals, nor harbours, except when they were necessary to the metropolis; for example, Agrippa made the network of Gallic roads; Augustus opened the first three great highways that crossed the Alps. It would be a mistake to suppose that these important constructions were designed to favour the progress of Gallic commerce; they were strategic highways made to defend the Rhine. As gradually Gaul grew rich, Rome had to recognise that the weak garrisons, set apart in the year 27 for the defence of the Rhine and the Danube, were insufficient. It would have been necessary to increase the army, but the finances were in bad condition. Augustus then thought to base defence on the principle that the immense frontiers could not all be assailed at the same time, and therefore he constructed some great military roads across the Alps and Gaul, to be able to collect the soldiery rapidly from all parts