7. Byzantine Empire

The Byzantine Empire thrived for over a thousand years, preserving and adapting Roman law, culture, and governance for the medieval world. It was a bastion of Orthodox Christianity, which profoundly influenced the spiritual and cultural life of Eastern Europe and Russia. Byzantine art, mosaics, and architecture—such as the Hagia Sophia—remain iconic. The empire’s legal code, the Justinian Code, became a cornerstone for later European law. Its legacy continues to shape religious and cultural traditions across Eastern Europe. Explore the Byzantine Empire.