Justinian I, also known as Justinian the Great, was the emperor of the Eastern Roman Empire from 527 until his death in 565. Born in a small locality in the Balkans, Justinian rose to power as the nephew and successor of Justin I, and his reign was marked by attempts to restore the greatness of the ancient Roman Empire.
One of Justinian's most ambitious goals was the reconquest of the Western provinces that had fallen into the hands of barbarians in preceding centuries. General Belisarius, one of his most loyal and capable commanders, was tasked with campaigns in North Africa and Italy. In 533, Belisarius defeated the Vandals in North Africa, bringing the region back under Byzantine control after nearly a century of barbarian rule. Subsequently, in 535, the long and bloody war against the Ostrogoths in Italy began, concluding with the fall of Ravenna in 540 and the reintegration of Italy into the Empire.
One of Justinian's most significant legacies was his legislative reform, culminating in the creation of the Corpus Juris Civilis, or Body of Civil Law.
Justinian was also a great patron of the arts and architecture. His most famous work is the Hagia Sophia Basilica in Constantinople, rebuilt between 532 and 537 after the previous version was destroyed during the Nika revolt. Hagia Sophia, with its vast dome and refined mosaics, is considered one of the greatest architectural achievements of late antiquity and a symbol of Justinian's power and Christian piety.
Despite these successes, Justinian's reign was not without difficulties. His military campaigns, although initially successful, were costly and draining. The war in Italy, in particular, dragged on for decades after his death, causing immense suffering among the local population and diverting precious resources from other frontiers. Additionally, during his reign, the Empire was struck by the Justinian Plague, a pandemic that killed millions of people, including, according to some accounts, a large portion of the population of Constantinople.
Justinian died in 565 without leaving a direct heir to the throne, marking the end of an era.