Final answer:
The Byzantine emperor who reinforced the continuity with the Roman Empire was Justinian, whose reign from 527 to 565 was marked by codifying Roman law, constructing iconic architecture like Hagia Sophia, and attempting to unite the empire under Christian orthodoxy.
Step-by-step explanation:
The Byzantine emperor who built a strong continuity with the old Roman Empire was Justinian, who ruled from 527 to 565. To reinforce the connection with Rome's past glory, Justinian undertook several significant initiatives. As the last Roman emperor to speak Latin as his native language, he embodied the cultural transition from Rome to Byzantium. He made his mark by restructuring the government to align with Christian principles, launching ambitious construction projects, including the renowned Hagia Sophia, and issuing the Corpus Juris Civilis or Justinian's Code, which codified Roman law and influenced European legal systems for centuries. He also attempted to impose religious uniformity and to address heretical movements, demonstrating the intertwining of secular and religious authority in the Byzantine Empire. His reign marked the height of Byzantine power and culture, linking the empire to its Roman roots.
Justinian's vision included a revival of Roman imperial aspirations, which entailed a series of military campaigns aimed at reclaiming lost Roman territories. Alongside his remarkable political and religious achievements, he was also known for his marriage to Theodora, a powerful and influential empress. Together, they shaped the Byzantine Empire in ways that reverberated through history, firmly rooting Byzantine governance and culture in the rich soil of Roman traditions.