Career
Prusias fought a war against Byzantium (220 British Columbia), then defeated the Galatians that Nicomedes I had invited across the Bosphorus. He expanded the territories of Bithynia in a series of wars against Attalus I of Pergamum and Heraclea Pontica on the Black Sea. Philip V of Macedon granted him the ports of Keios and Myrleia in 202, which he renamed Prusias and Apameia respectively.
Although he granted sanctuary to Hannibal, who fought against the Attalids for him, he remained neutral during the Roman Republic"s war with Antiochus III the Great.
Prusias is the namesake of the city of Prusa (now Bursa in Turkey), which he rebuilt.
