>>725313581
I'll just give you the chatgpt output since it's all you deserve
What they called themselves
Officially and in everyday life, they called their state the Roman Empire (Basileía tôn Rhōmaíōn, Βασιλεία τῶν Ῥωμαίων in Greek), and themselves Romans (Rhōmaioi, Ῥωμαῖοι).
Their emperor was the Emperor of the Romans (Basileus Rhōmaiōn).
The term Byzantine comes from Byzantium, the ancient Greek name of the city that became Constantinople (modern Istanbul).
Western European scholars in the 16th–17th centuries, especially after the fall of Constantinople in 1453, began using “Byzantine Empire” to distinguish the medieval, Greek-speaking Christian empire from the ancient Latin-speaking Roman Empire.
The term was popularized by Hieronymus Wolf (1516–1580), a German historian who published the Corpus Historiae Byzantinae in 1557.