The "Byzantine Empire" is the term used since the 19th century to describe the Roman Empire of the Middle Ages, centred on its capital, where?
Result - Constantinople
Towards the end of which century CE did the Roman Empire start to disintegrate prior to separating into Western and Eastern Empires?
What name was given by Barbarossa to his empire in 1156 that was applied to various territories until it was dissolved in 1806 by the resignation of Francis II of Austria?
