This era marked the empire’s peak territorial reach and cultural splendor.
Byzantium faced centuries of existential threats from Persians, Slavs, and the rise of Islam. Podcasting in Istanbul? - The History of Byzantium A History of Byzantium
The empire’s origins lie in the restructuring of the Roman state. This era marked the empire’s peak territorial reach
: Facing a Crisis of the Third Century , Emperor Diocletian divided the Roman Empire into East and West to make it more governable. A History of Byzantium