History of the Roman Empire disputes about the supreme authority, this finally formalised a peaceful succession of the emperor: in each half a "Caesar" would rise up to replace the "Augustus" and select a new "Caesar". On May 1, 305, Diocletian and Maximian abdicated in favour of their "Caesars". Galerius named the two new "Caesars": his nephew Maximinus for himself, and Flavius Valerius Severus for Constantius. The arrangement worked well under Diocletian and Maximian and shortly thereafter. The internal tensions within the Roman government were less acute than they had been. In "The Decline and Fall of the Roman Empire", Edward Gibbon notes that this
Decline of the Byzantine Empire Decline of the Byzantine Empire The Byzantine Empire (the Eastern Roman Empire during the medieval period, after the fall of the Western Roman Empire) following the Sack of Constantinople (1204) slowly collapsed by Ottoman expansion. After crisis of the Gothic Wars it managed to re-establish itself in a golden age under the Justinian dynasty in the 6th century, and during the Early Middle Ages it continued to flourish even after the Muslim conquest of the Levant and the constant threat of Arab invasion. But in the High Middle Ages, under pressure from the Seljuk Empire, it suffered serious setbacks and