During the later periods of the Roman Empire, there was one "ruler" or emperor of the western half and one emperor of the eastern half. The eastern half would later be referred to as the Byzantine...
Rome is the capital city of italy. It is located in the western part of europe.
Eastern Rome was Rome and western Rome was Constantinople
Early Rome was ruled by the Etruscans.
They hid in what is called the 'catacombs', which are underground burial places.