It was already a Greek speaking Empire by the time of Justinian. The lingua franca of the Empire doesn't, imho, determine continuity. Hellenism and speaking Gre

It was already a Greek speaking Empire by the time of Justinian. The lingua franca of the Empire doesn't, imho, determine continuity. Hellenism and speaking Greek was popular from the time of Hadrian (and before). Marcus Aurelius wrote his meditations in Greek and Emperors before Justinian were more comfortable in Common Greek than Latin. Calling it a Greek empire is falling for a thousand years of Papal and Frankish propaganda. They want it to seem 'other' as they never wanted the (Eastern) Roman Empire to appear legitimate. It is the church in Rome that is other. It broke from the one true Orthodox faith, not the other way around.