Great Britain is a: unitary state

Great Britain is a:
unitary state

 Great Britain is a unitary state. This means that the central government in London has supreme authority over the other parts of the country, which are called "constituent countries." The constituent countries of Great Britain are England, Scotland, Wales, and Northern Ireland.

Devolution is the process of giving more power to the constituent countries of Great Britain. This process began in the 1990s, and it has led to the creation of devolved governments in Scotland, Wales, and Northern Ireland. These devolved governments have their own elected parliaments or assemblies, and they have powers over a range of matters, such as education, health, and transport.

Despite devolution, Great Britain remains a unitary state. The central government in London still has supreme authority over the constituent countries, and it can override any decision made by the devolved governments.

Here is a table summarizing the different types of states:

Type of state	Definition	Example
Unitary state	A sovereign state governed as a single entity in which the central government is the supreme authority.	United Kingdom, France, Spain
Federal state	A sovereign state in which the central government and the sub-national units share power.	United States, Germany, Canada
Confederation	A union of sovereign states that have agreed to cooperate on certain matters, but that retain their individual sovereignty.	Switzerland, United Arab Emirates