Nicomedian Empire (Thriving West Rome)

The Nicomedian Empire was one of the East Roman successor states, it was based around the city of Nicomedia, which was the most heavily fortified city in the world. The successor states ushered in a new era of Romano-Greek dominance in the east, similar to the Diadochi and the Hellenistic period. The successor states ushered in the East Roman period.