Old Assyrian Empire which included the power to detain people and confiscate property. At the beginning of the reign of an Assyrian king, the limmu, an appointed royal official, would preside over the New Year festival at the capital city. The eponym dating system was a calendar system for Assyria, for a period of over one thousand years. Every year was associated with the name, an eponym, of the limmu, the individual holding office. The dating system is thought to have originated in the ancient city of Assur, and remained the official dating system in Assyria until the end of the Neo-Assyrian Empire
Roman Empire Roman Empire The Roman Empire (, ; Koine and Medieval Greek: Βασιλεία τῶν Ῥωμαίων, tr. ; ) was the post-Roman Republic period of the ancient Roman civilization. It had a government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia. The city of Rome served as its capital until the seat of the imperial government was shifted to Constantinople by Constantine the Great in the 4th century AD. The previous Republic, which had replaced Rome's monarchy in the 6th century BC, became severely destabilized in a series of civil wars and political conflict.