What was the most centralised large sovereign (not under a unions, like kingdoms under the HRE) state in medieval Europe? i.e. The Head of State had more power over a province than their governors (or Barons, or Dukes, or Princes...etc). | AskHistorians Archive Observer

What was the most centralised large sovereign (not under a unions, like kingdoms under the HRE) state in medieval Europe? i.e. The Head of State had more power over a province than their governors (or Barons, or Dukes, or Princes...etc).

by KalaiProvenheim

Governors could not wage their own wars, levy their own taxes, or impose their own laws without the Head of State's approval.

iconodule1981

I think your answer has to be Byzantium - although their holdings in Europe fluctuate over the centuries, I think that of all the states that emerge from the post-Roman world, the Byzantine state is the most centralized, to speak in generalities....