Final answer:
The answer is D. Rome and Constantinople. The Eastern Roman Empire, known as the Byzantine Empire, had its capital in Constantinople, while the Western Roman Empire's capital remained in Rome.
Step-by-step explanation:
After the death of Theodosius, Rome was divided into two empires whose capitals were Rome and Constantinople. The correct answer is D. Rome and Constantinople. The Eastern Roman Empire, often referred to as the Byzantine Empire, continued to thrive with its capital in Constantinople, a city founded on the site of the ancient Greek city of Byzantium which was renamed by Constantine I. On the other side, the Western Roman Empire, with its capital remaining in Rome, gradually weakened and ultimately fell.
This division was emblematic of a shift of power and culture towards the East, with Constantinople becoming a prosperous center of trade, wealth, and Christian civilization. The city of Rome's prominence diminished after Constantine's establishment of the New Rome at Constantinople, marking the beginning of a slow decline for the Western Empire.