Becoming the emperor of the Roman Empire is a dangerous job. Often the rulers were killed by those who were driving behind the government, not to mention the disease, epidemics and infections. So who can hold the longest power? Livescience.com information portal I found it In the problem.

Theoretically, finding the longest ruler is quite simple – you just need to look at the list of ancient Rome rulers and compare numbers. But in reality, to answer this question more difficult than you think.
First of all, it is necessary to set up when the Roman Empire no longer exists. It was permanently divided into two countries in 395 and the Western Roman Empire existed until 476. But the Eastern Roman Empire, which modern historians called the Byzantine Empire, lasted until 1453, until Constantinole was arrested by the Ottoman Empire.
Today, most historical experts believe that the Byzantine Empire is not an independent nation – it is considered a continuation of the Roman Empire. If you start from this logic, the longest is the dynasty of Vasily II, the state rule from 976 to 1025. At his time, many wars have been; The Emperor had to encounter a series of civil wars in the first half of the government and foreign wars in the second half. But in the end, the Byzantine Empire conquered all the territory of Bulgaria.
If we consider the end of the Roman Empire in 476, when the Western Roman Empire, then to say whose ruling is the longest, still difficult. Some emperors ruled along with others, while others, in fact, almost no political power and were only official emperors.
Theodosius II, who rules in 402-450, theoretically can be a 48-year rule. His father, Emperor Arkady, called his son a teammate in 402, right after birth. Arkady died in 408, and Theodosius II became the only emperor, but at that time he was too young. Even when an adult ruler, he has strong nobles with strong political influence. Therefore, the effect of theodosius II as a rule is suspected.
In this regard, if you only take the emperors, the rather adults in the entire term of the Government, the title of the retired champion Augustus Octavian – the first Roman Emperor. He ruled 41 years, from 27 BC to the 14th CE, the heir of Julia Caesar himself. After the murder of Caesar in 44 BC, Octavian founded the ruling Triumvirate with Mark Anthony and the Lepid politician.
But Lepida was transferred from his position in 36 BC, then a civil war broke out between Octavian and Mark Anthony, leading to Anthony's defeat and suicide. Cleopatra VII, who gave birth from Anthony and Julia Caesar, also killed himself in the same year. But Cleopatra had an heir to Caesar – Caesarion. In order not to accept risks, Octavian killed him to eliminate the threat to his rule.
During its dynasty, Octavian repaired and restored many structures and infrastructure in Rome, including temples, altars, a forum, the Senate, wastewater and housing. But failure is also in his rule. Octavian Augustus tried to expand the assets of the Roman Empire at German costs, ending in a blame: As a result of the famous battle, the three Roman Corps were killed in the Teuttburg forest.