There are several different terms that you might be asking about. I think you're probably asking about a Dictatorship. Totalitarianism might be another good choice.
dictatorship
dictatorship
A parliamentary democracy.
a Dictatorship
Dictatorship
a Dictatorship
The government wherein majority of the nation's citizens have little or no voice in the manner in which they were governed is called dictatorship. This is wherein political authority is monopolized.
Many forms of government fall within these parameters.
If you meant 'what form' - it's a democratic government.
Massachusetts Citizens for Vaccination Choice.
A self-governed by Puritan leaders.
The government of Oregon is referred to as the U.S. state of Oregon. It is governed under the Oregon Constitution. It a commission form of government wherein citizens of the state are appointed by the governor under the confirmation of the Senate. Commissions have a measure of authority over the agencies they govern.
Legions
Centralized government involves a relatively large region being governed from one location.