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
Executive magistrates of the Roman Empire Executive magistrates of the Roman Empire The executive magistrates of the Roman Empire were elected individuals of the ancient Roman Empire. During the transition from monarchy to republic, the constitutional balance of power shifted from the executive (the Roman King) to the Roman Senate. During the transition from republic to empire, the constitutional balance of power shifted back to the executive (the Roman Emperor). Theoretically, the senate elected each new emperor, although in practice, it was the army which made the choice. The powers of an emperor, (his "imperium") existed, in theory at least, by virtue of his legal standing.