Constantinople:The capital city of the Byzantine Empire, strategically located on the crossroads of Europe and Asia, known for its massive walls and as a center of trade and culture.
Justinian I: A prominent Byzantine emperor who ruled from 527 to 565, famous for his legal reforms, the construction of Hagia Sophia, and efforts to reconquer lost territories of the Western Roman Empire.
Orthodox Christianity:The branch of Christianity that became dominant in the Byzantine Empire, characterized by the development of unique theological concepts and liturgical practices distinct from Western Catholicism.