One of the most prosperous city-states of the Aegean coast was Pergamum, ruled since 264 b.c. by the Attalid dynasty.
Pergamum was the most prosperous city-state of the Aegean.
mnli hypothesis: Pergamum was the most prosperous city-state of the Aegean. premise: One of the most prosperous city-states of the Aegean coast was Pergamum, ruled since 264 b.c. by the Attalid dynasty.