Constantine.
The Roman general who became emperor in AD 284 and established the tetrarchy was Diocletian. He divided the empire into four regions, each with its own ruler, to efficiently govern the vast territory. This system aimed to stabilize the political and military situation of the Roman Empire during a time of instability and external threats.
In the west, the last emperor of the Romans was drive from power in 476 AD. In the east the last Roman emperor was ousted in 1454.
The emperor Titus was in power in 80 AD.
The Roman emperor in 79 Ad was Vespasian.In 79 AD CE the Roman emperor was Vespasian.
Constantine.
284 AD
intruduced reform
because a series of weak rulers came along and most were children
Titus Flavius Vespasianus, commonly known as Titus, came to power as Roman Emperor in 79 AD after the death of his father, Vespasian. He succeeded his father as emperor and ruled until 81 AD. Titus was well-regarded for his handling of disasters like the eruption of Mount Vesuvius in 79 AD and the fire that ravaged Rome in 80 AD.
You may mean the Diocletianic persecution. If so, it is the persecution of Christians by the Roman Emperor Diocletian (ruled from 284 to 305 AD).
In 800 AD under Charlemagne.
The Roman general who became emperor in AD 284 and established the tetrarchy was Diocletian. He divided the empire into four regions, each with its own ruler, to efficiently govern the vast territory. This system aimed to stabilize the political and military situation of the Roman Empire during a time of instability and external threats.
Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.Nero was the emperor in AD 57 and 58.
Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.Caligula was emperor from 37 AD to 41 Ad.
In the west, the last emperor of the Romans was drive from power in 476 AD. In the east the last Roman emperor was ousted in 1454.
The emperor Titus was in power in 80 AD.