Charlemagne.
Charlemagne (768 - 814 AD).
In 500 AD, the Roman Empire was in decline, with the Western Roman Empire having fallen in 476 AD. The Eastern Roman Empire, or Byzantine Empire, was under the rule of Emperor Anastasius I. Meanwhile, various Germanic tribes had established kingdoms in former Roman territories, such as the Ostrogoths in Italy and the Franks in Gaul. In Asia, the Gupta Empire was flourishing in India, with Chandragupta II as a prominent ruler.
Augustus was not the ruler of a country. He was the ruler of an empire: the Roman Empire.
Augustus was the ruler of the Roman Empire when the Aeneid was written. In fact, he specially commissioned Virgil to write it.
The ruler who created the Persian Empire was Cyrus the great
Charlemagne was the first ruler of the Holy Roman Empire.
The emperor
Octavian defeated Antony and became the first ruler of the Roman Empire.
Diocletian was the Roman Empire in the late 200's
Augustus caesar
Calilgula
The Pope