Gaius Aurelius Valerius Diocletianus Augustus was the emperor of the Roman Empire from 284 to 305 CE. The capital where he resided was Rome.
Diocletian was the last Roman emperor to rule the entire empire. He ordered the shared rulership upon his retirement.
Diocletian realized the Roman Empire was too large for one man to rule well.
Diocletian first pushed back the Sassanids and the Germans. Then he ended the revolts. Then he tried to solve the problem of the civil wars between the two halves of the army. Diocletian worked out a system where there would always be two Emperors, and each of these Emperors would have two assistants. This system is called the Tetrarchy (rule of four). When one of the Emperors died, his assistant would move up to being Emperor, and choose a new assistant.
Diocletian abdicated in 305 CE.
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Diocletian ruled from 20 November 284 to 1 May 305
284 AD
Diocletian was proclaimed emperor in 284 and abdicated in 305. Therefore, his reign lasted 21 years.
Diocletian was the last Roman emperor to rule the entire empire. He ordered the shared rulership upon his retirement.
Diocletian
Diocletian was proclaimed emperor in 284 and abdicated in 305. Therefore, his reign lasted 21 years.
He split it into four to decentralise its governance.
Diocletian realized the Roman Empire was too large for one man to rule well.
The Roman empire became a tetrachy after Diocletian made the split. Tetrachy means the rule by four. After Diocletian there were two Caesars and two Augustuses.
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During the rule of Diocletian, the term "vocation" referred to a person's occupation or role in society. In this context, hereditary vocation meant that a person's occupation or role was passed down from generation to generation within their family. This system helped maintain social order and stability in Roman society during Diocletian's reign.
At first he was appointed Caesar by Diocletian to help him rule the empire but was later promoted to full Augustus and given rule of the West