6. The Greek Takes Over Byzantine
Most of the historians agree that the Byzantine Empire became Greek after in culture after it was added in the Byzantine throne of Heculius in 610 A.D. the Byzantine Empire was made Greek completely. Greek was made the official language of the Empire and became widely spoken language of Byzantine population.
Byzantine Empire being originally eastern Roman Empire had to change herself to a new dimension. By 650 AD only few Roman elements remained under Greek influence. From 650AD onwards Byzantine population was having Greek cultural background.