Any emperor; it is probable a confusion.
The Roman emperor Marcus Aurelius (121-180 AD).
The colour that only the Roman emperor was allowed to wear was purple.
Nero
Valens was the brother of Valentinian I, the 65th Roman emperor. His brother made him co-emperor and put him in charge of the eastern part of the Roman Empire. In 376 e allowed the Visigoths, who were seeking sanctuary to escape the Huns, to settle in the lower Danube area of the empire. In 378 he died at the Battle of Adrianople, one of the worst defeats in Roman history.
Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.Justinian was a Roman emperor and his empire was the Roman empire.
Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.Diocletian was the emperor who divided the Roman empire.
The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.The last Roman emperor in the west was overthrown in 476 and the last Roman emperor of the east, in 1453.
The emperor Trajan conquered Dacia (most of present day Romania and part of Moldova) and Mesopotamia (Iraq).
Emperor Nero was the worst roman emperor ever known in the roman empire.
Constantine gave more rights to Christians and allowed them to hold offices which was not allowed before.
The emperors usually were the main decider of what was allowed or what wasn't. In that aspect they could rule until their death; murder or natural. There was no time limit on their reign apart from age. The longest ruling emperor was the first: Augustus who reigned for 41 years.
Trajan, who crossed the Danube added Dacia (Romania) to the Roman Empire, and he expanded into the East, although the Eastern provinces were abandoned by his successor Hadrian. Earlier, the Emperor Claudius added Britain to the Roman Empire.