Question

what is the name usually used for the eastern half of the roman empire?
romanana este
eastern rome
orthodox rome
byzantium

Explanation:

The Eastern half of the Roman Empire is commonly known as the Byzantine Empire (also referred to as Byzantium in some contexts, and historically it was also called the Eastern Roman Empire). Among the options, "Byzantium" (or the Byzantine Empire) is the usual name for the eastern half after the division of the Roman Empire, though "Eastern Roman Empire" is also accurate. But from the given options, Byzantium is the term that aligns with the common historical naming (note: the Eastern Roman Empire is also the Byzantine Empire, with Byzantium being a key term related to it).

Answer:

Byzantium