Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Pergamon and its Multi-Layered Cultural Landscape' has mentioned 'Achaemenid Empire' in the following places:
Occurrence Sentence Text Source
At this time Pergamon was in the possession of the family of Gongylos from Eretria, a Greek favourable to the Achaemenid Empire who had taken refuge in Asia Minor and obtained the territory of Pergamon from Xerxes I, and Xenophon was hosted by his widow Hellas.
Possible coinage of the Greek ruler Gongylos, wearing the Persian cap on the reverse, as ruler of Pergamon for the Achaemenid Empire.