Constantine enacted another change that helped accelerate the fall of the Roman Empire. In 330 C.E., he split the empire into two parts: the western half centered in Rome and the eastern half centered in Constantinople, a city he named after himself.
The Roman Empire was divided into an eastern half and a western half in 285 CE by the Emperor Diocletian. It was the Emperor Constantine in 330 CE, however, who moved the capital of the Roman Empire to Byzantium (Constantinople), in the Eastern Roman Empire.
