The Byzantine Empire, particularly during the reign of Emperor Justinian I, is renowned for its notable legal codes, specifically the "Corpus Juris Civilis" or "Body of Civil Law" developed in the 6th century AD. This comprehensive collection of laws and legal interpretations organized existing Roman law, making it more accessible and systematic. It had a profound influence not only on the Byzantine legal system but also on the development of legal systems in many Western countries. The Corpus Juris Civilis remains a foundational text in the study of law.