Answer:
Justinian is generally thought to be one of the most important rulers of the Eastern Roman Empire. His most significant achievement is considered to be the collection of Roman laws, the Corpus Juris Civilis, which was an important body of law for the Eastern Roman Empire for centuries and laid the foundation for the legislation of several other European countries.
During Justinian's reign, Byzantium recaptured lost territories in Africa and Italy. He also significantly reformed administration and legislation. Justinian began a major building program, the most famous achievement of which was the Church of Hagia Sophia in Constantinople.
Explanation:ez
