sentences:  The Roman Republic had been changed into a despotic régime, which, underneath a competent and strong Emperor, could achieve military supremacy, economic prosperity, and a genuine peace, but under a weak or incompetent one saw its glory tarnished by cruelty, military defeats, revolts, and civil war.A final assessment must necessarily be ambivalent.On the one hand, for the Roman state, the restoration of the monarchy led to apogee followed by a series of stabilizations resulting in a slow decline in the Greek East where it survived until the fall of Constantinople in 1453 AD, nearly 1500 years later.