Dominate

Topics in Roman Government
Roman Kingdom
Roman Republic
Roman Empire
PrincipateDominate
Western EmpireEastern Empire
Ordinary Magistrates:
Extraordinary Magistates:
Mandatory officials / Miscellaneous Offices:
Politics and Law:

The Dominate was the 'despotic' last of the two phases of government in the ancient Roman Empire between its establishment in 27 BC and the formal date of the collapse of the Western Empire in AD 476.

The word is derived from the Latin dominus, meaning master, as an owner versus his slave - this had been used sycophantically to adress emperors from the Julian-Claudian (first) dynasty on, but not used by them as a style - Tiberius in particular is said to have reviled it openly. It became common under Domitian, who is therefore a logical choice as the first ruler of 'early' dominate.

The first phase of Imperial government, known as the Principate, when the formalities of the constitutionally never abolished republic were still very much the 'politically correct' image, has also often been said to ended after the Third Century Crisis of 235-275, which concluded when Diocletian established himself as Emperor. Moving the notion of the Emperor away from the republican forms of the Empire's first three centuries, Diocletian introduced a novel system of joint rule by four, the tetrarchy, and he and his colleagues and his successors (in two imperial terriories, east and west, not four) chose to stop using the title princeps, instead openly displaying the naked face of Imperial power and adopting a hellenistic style of government more influenced by the veneration of the Eastern potentates of ancient Egypt and Persia than by the heritage of civic collegiality amongst the governing class passed down from the days of the 'uncrowned' Roman Republic.

See also: Dominate, 235, 275, 27 BC, 476, Aedile, Augustus, Byzantine Empire, Caesar (title)