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The emperor Diocletian created the tetrarchy (rule by four) and created FOUR main administrative units (not two) which were called praetorian prefectures. Diocletian appointed fellow general Maximian as co-emperor. Maximian took overall control of the western part of the empire, while Diocletian took overall control of the eastern part. These two men became senior emperors (Augusti) with the creation of two junior emperors (Caesars). The Caesars were subordinate to the Augusti and took charge of defending the troubled frontiers along the rivers Rhine and Danube respectively, which were under constant attack from outside.

The above created the four praetorian prefectures. Diocletian took charge praetorian prefecture of Oriens : eastern Libya (Cyrenaica) Egypt and the territories in Asia. Maximilian took charge of the praetorian prefecture of Italia: Italy and Africa (north-western Africa). One junior emperor (Constantius I) took charge of the praetorian prefecture of Galliae: Britannia and Gaul and Hispania. The other Caesar (Galerius) took charge of the praetorian prefecture of Illyricum: the Balkan Peninsula in south-eastern Europe. These were units of a single empire which, Diocletian stressed, was indivisible.

This reform had several aims: 1) The bad experience of recent sole emperors suggested to Diocletian that sole emperors were vulnerable and that co-emperorship made power more secure. 2) Diocletian had no male issue. Therefore he needed a trusted co-ruler from outside the family. 3) There was a need to improve imperial control over the empire. There had been conflict between powerful men in every province of the empire. Diocletian shared controlling the provinces with Maximian. 4) There was also a need to improve the efficiency of the defence of the vast frontiers of the empire from constant attacks from outside. The creation of these four units was not a division of the empire which, as Diocletian stressed, was indivisible. It was an administrative arrangement.

Co-emperorship was not new. Previously emperors had made their sons co-emperors with one in charge of the east and the other in charge of the east. The purpose was the same, improving the defence of the frontiers. After the tetrarchy, there was an alternation of periods of co-emperorship and periods with a sole emperor. This clearly shows that the empire was not divided.

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Constantine the Great divided the Roman Empire into two, the Western and the Eastern. He did this because he felt that having two rulers over such a large territory would be easier to manage.

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emperor Diocletian

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Constantine

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Diocletian.

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Q: What was the name of the emperor that split the Roman Empire in two parts?
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When did empire split into four sections?

If you are referring to the Roman empire, no one split it into two pieces or two parts. The emperor Diocletian divided it into four parts which was called the tetrarchy. It was later historians that gave the false impression that the empire was split.


When the roman empire fell who were the leaders?

There was a split between two parts of Rome. The Eastern and the Western parts. Thinking about it, there were two emperors when the Roman Empire fell. The emperor for the Eastern part of Rome was Romulus Augustus . And the The emperor for the Western part of Rome was Odoacer.


When and why did the roman empire split into western and eastern parts?

The Roman Empire officially split into the Western and Eastern parts in 395 AD after the death of Emperor Theodosius I. This division was primarily due to the size and administrative challenges of governing such a vast empire. The Western Roman Empire faced numerous external threats and internal instability, while the Eastern Roman Empire, also known as the Byzantine Empire, flourished and endured for another thousand years.


Which emperor encouraged the split of the roman empire into eastern and western provinces?

Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.


Who split the roman empire in half then retired to garden?

It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.It was the emperor Diocletian.

Related questions

Who split the empire into two?

If you are referring to the Roman Empire, no one split it into two pieces or two parts. The emperor Diocletian divided it into four parts which was called the tetrarchy. It was later historians that gave the false impression that the empire was split.


Which emperor willed on his life that the Roman empire should be split into two parts?

No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.No emperor declared that the empire should be split into two parts. It was historians that made the distinction in order to avoid confusion.


When did empire split into four sections?

If you are referring to the Roman empire, no one split it into two pieces or two parts. The emperor Diocletian divided it into four parts which was called the tetrarchy. It was later historians that gave the false impression that the empire was split.


When the roman empire fell who were the leaders?

There was a split between two parts of Rome. The Eastern and the Western parts. Thinking about it, there were two emperors when the Roman Empire fell. The emperor for the Eastern part of Rome was Romulus Augustus . And the The emperor for the Western part of Rome was Odoacer.


Who split the roman empire into two parts in ad 330?

Constantine split the Roman Empire into the Holy Roman Empire and the Byzantine Empire. It should be noted however that the emperor Diocletian (284-305 AD ) made this easier as he was the first to divide the empire into two parts, a western and eastern empire to be ruled separately. The emperors who followed Constantine, Julian and Theodosius I, made permanent the division of the Roman Empire into an eastern and western half.


When and why did the roman empire split into western and eastern parts?

The Roman Empire officially split into the Western and Eastern parts in 395 AD after the death of Emperor Theodosius I. This division was primarily due to the size and administrative challenges of governing such a vast empire. The Western Roman Empire faced numerous external threats and internal instability, while the Eastern Roman Empire, also known as the Byzantine Empire, flourished and endured for another thousand years.


Which emperor encouraged the split of the roman empire into eastern and western provinces?

Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.Diocletian.


What two parts did the holy roman empire split into?

eastern and western


Who split the Roman Empire in two parts in AD 330?

Constantine


Who split Roman Empire into two parts in AD 330?

Constantine


Why did the Roman Empire split into the Eastern and Western Roman Empire?

The empire was never split into two parts. Eastern Roman Empire and Western Roman Empire are terms which have been coined by historians. The Romans has only one term: Roman Empire. Emperor Diocletian created a tetrarchy (rule by four). He was a senior emperor with fellow general Maximian who was his co-emperor. Maximian was senior emperor in the west and Diocletian was senior emperor in the east. Two junior emperors were also appointed. They were subordinate to the senior emperors and took charge of areas of the frontiers which were under the greatest pressure from attacks from outside, the river Rhine in the west and the river Danube in the east. The four units were administrative units of a single empire. Diocletian stressed that the empire was indivisible. The arrangement was designed to improve the defence of the vast frontiers of the empire which were constantly attacked.


What emperor reunited the Roman Empire after Diocletian had divided it?

Emperor Constantine reunited the Roman Empire in 324 AD after it had been split by Emperor Diocletian. But soon after his death the empire would again be divided. The east would survive; the west would fall