According to the information provided, none of the cities mentioned (Rome, Athens, Jerusalem, Kiev) are part of the choices. Therefore, without additional information about the specific cities provided on the map, we cannot determine which city was part of the Byzantine empire the longest.
I would bet on Kiev
Apologies for the oversight. Without the map or specific information, it is difficult to provide an accurate answer. However, if Kiev is included on the map and is an option among the cities mentioned, then it would be reasonable to consider Kiev as a potential candidate. The Byzantine Empire had a significant influence over Kiev and the region known as Kievan Rus, but it is important to note that it was not directly controlled by the Byzantine Empire for an extended period. Further research on the specific map or historical context might be necessary to determine the correct answer definitively.
