Byzantine/Freeciv

Description
At the time of the decline of the old Roman empire, the Emperor Constantine moved the empire's capital to Byzantium and formed a new empire mostly known as the Eastern Roman empire or the Byzantine empire. This empire lasted until 1453 when its capital fell to the Ottomans. At the time of Justinian I, the Byzantines controlled nearly all of the Middle East, northern Africa, Italy, and parts of Spain.