This form of government is defined in Wikipedia¹ as:

“A unitary state is a state governed as a single power in which the central government is ultimately supreme and any administrative divisions (sub-national units) exercise only the powers that the central government chooses to delegate. The majority of states in the world have a unitary system of government. Of the 193 UN member states, 165 are governed as unitary states.”

The most notable examples of this form today are China, France and the United Kingdom. It shall be noted, again, that 85% of the UN member states are governed as unitary states. This of course means that the majority “group think” of this organization is one of less Liberty and personal Freedoms.

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1. Wikipedia is NOT my go to source but for something this basic, it’s the quickest. I will NOT make a habit of this on the site.