Evolution of power after the principle
In the third century CE the rulers of Rome began gradually to depart from the appearances of the Republic. The growing political ambitions of the emperors led to the expulsion of the rest of the institutions. Aurelian introduced the dominant system in the second half of the 3rd century CE, taking the title dominus et deus (“Our Lord and God”). Diocletian made at the end of the 3rd century CE reconstruction of the state administration, creating a tetrarchy system.