When a central government has essentially all important powers, the system is termed balance of power.
federalism.
a unitary system.
confederalism.

Option: A unitary system.

Explanation:

A unitary state is a governing system in which a central government holds total power over all other political subdivisions. The central government controls weaker states, and the control not shared between states. Some of the nations who follow a unitary system are France and the United Kingdom.

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes