Which of these cities was the capital of the Roman Empire?
Correct answer: Constantinople
riel
The capital changed many times, and there wasn't always only one at a given time.
Patches
Ravenna was also capital, at some point.
Bubu
riel, It is true that the Roman Empire had different capital in different times, starting with Rome. The question was really about which of the 4 was the capital, no reference about the period.