Answer:
The Rhine and Danube rivers.
Explanation:
The Roman Empire has been one of the ancient empires. Roads had played a significant role in the Roman Empire. Roads were not just the mean of transportation but also they were a means of placing the stamp of the control of Rome across a newly occupied region. The roads in the Roman empire were built by the Roman Army. The army followed the path provided by the Rhine and the Danube rivers to construct roads.
