Describe three of Justinian's major accomplishments?

Justinian I, the Byzantine emperor from 527 to 565, is best known for his ambitious reforms and achievements. First, he codified Roman law into the "Corpus Juris Civilis," which laid the foundation for modern legal systems in many countries. Second, he sought to expand the Byzantine Empire, successfully reconquering parts of North Africa, Italy, and Spain. Lastly, his architectural legacy includes the construction of the Hagia Sophia, a monumental church that exemplifies Byzantine architecture and remains a symbol of Orthodox Christianity.