Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Frontiers of the Roman Empire – The Lower German Limes' has mentioned 'Roman Empire' in the following places:
Occurrence Sentence Text Source
The Lower Germanic Limes separated that part of the Rhineland left of the Rhine as well as the Netherlands, which was part of the Roman Empire, from the less tightly controlled regions east of the Rhine.
It was laid out partly by Augustus and his stepson and military commander, Drusus, who began to strengthen the natural boundary of the Rhine from the year 15xc2xa0A.xc2xa0D. The decision not to conquer the regions east of the Rhine in 16xc2xa0A.xc2xa0D. made the Rhine into a fixed frontier of the Roman Empire.