Which city did Diocletian establish as a new administrative center in the Eastern Empire?
Nicomedia
Mediolanum
Sirmium
Trevorum
Answer
Diocletian established new administrative centers closer to the empire's frontiers, including Nicomedia in the Eastern Empire. These centers were intended to improve governance and control over the vast Roman territories.
Mastering the Mighty Diocletian: A Roman Emperor's Reign Revealed