Unitary state
A unitary state is a sovereign state governed as a single entity in which the central government is the supreme authority. The central government may create or abolish administrative divisions (sub-national units).[1] Such units exercise only the powers that the central government chooses to delegate. Although political power may be delegated through devolution to regional or local governments by statute, the central government may override the decisions of devolved governments, curtail their powers, or expand their powers.

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Unitary states stand in contrast to federations, also known as federal states. A large majority of the UN member countries, 166 out of 193, have a unitary system of government.[2]
Devolution compared with federalism
    
A unitary system of government can be considered to be the opposite of federalism. In federations, the provincial/regional governments share powers with the central government as equal actors through a written constitution, to which the consent of both is required to make amendments. This means that the sub-national units have a right to existence and powers that cannot be unilaterally changed by the central government.[3]
There are, however, similarities between federalism and devolution. Devolution within a unitary state, like federalism, may be symmetrical, with all sub-national units having the same powers and status, or asymmetric, with sub-national units varying in their powers and status. Many unitary states have no areas possessing a degree of autonomy.[4] In such countries, sub-national regions cannot decide their own laws. Examples are Romania, Ireland and Norway.

List of unitary states
    
Italics: States with limited recognition from other sovereign states or intergovernmental organizations.
Unitary republics
    
 Albania
 Algeria[1]
 Angola
 Armenia
 Azerbaijan
 Bangladesh[1]
 Barbados[5]
 Belarus
 Benin
 Bolivia
 Botswana
 Bulgaria
 Burkina Faso
 Burundi
 Cameroon
 Cape Verde
 Central African Republic
 Chad
 Chile
 People's Republic of China
 Colombia
 Democratic Republic of the Congo[1]
 Republic of the Congo
 Costa Rica
 Croatia
 Cuba
 Cyprus
 North Cyprus
 Czech Republic
 Djibouti
 Dominica
 Dominican Republic
 East Timor
 Ecuador
 Egypt
 El Salvador
 Equatorial Guinea
 Eritrea
 Estonia
 Fiji
 Finland
 France
 Gabon
 Gambia
 Georgia
 Ghana
 Greece
 Guatemala[1]
 Guinea
 Guinea-Bissau
 Guyana
 Haiti[1]
 Honduras
 Hungary
 Iceland[1]
 Indonesia[1]
 Iran
 Ireland
 Israel
 Italy[1]
 Ivory Coast
 Kazakhstan[1]
 Kenya[1]
 Kiribati
 North Korea
 South Korea
 Kosovo
 Kyrgyzstan
 Laos
 Latvia
 Lebanon
 Liberia
 Libya
 Lithuania
 Madagascar
 Malawi
 Maldives
 Mali
 Malta
 Marshall Islands
 Mauritania
 Mauritius
 Moldova
 Mongolia
 Montenegro
 Mozambique
 Myanmar
 Namibia
 Nauru
 Nicaragua
 Niger
 North Macedonia
 Palau
 Palestine
 Panama
 Paraguay
 Peru
 Philippines[1]
 Poland
 Portugal
 Romania
 Rwanda
 Sahrawi Arab Democratic Republic
 Samoa
 San Marino
 São Tomé and Príncipe
 Senegal
 Serbia
 Seychelles
 Sierra Leone
 Singapore
 Slovakia
 Slovenia
 South Africa
 Sri Lanka
 Suriname
 Syria
 Republic of China (Taiwan)[6]
 Tajikistan
 Tanzania
 Togo
 Transnistria
 Trinidad and Tobago
 Tunisia
 Turkey
 Turkmenistan
 Uganda[1]
 Ukraine
 Uruguay
 Uzbekistan
 Vanuatu
 Vietnam
 Yemen
 Zambia
 Zimbabwe
Unitary monarchies
    
The United Kingdom of Great Britain and Northern Ireland is an example of a unitary state. Scotland, Wales and Northern Ireland have a degree of autonomous devolved power, but such power is delegated by the Parliament of the United Kingdom, which may enact laws unilaterally altering or abolishing devolution. Similarly in Spain, the devolved powers are delegated through the central government.
 Andorra
 Antigua and Barbuda
 Bahrain
 The Bahamas
 Belize
 Bhutan
 Brunei
 Cambodia
 Denmark[1]
 Eswatini
 Grenada
 Jamaica
 Japan[1]
 Jordan
 Kuwait
 Lesotho
 Liechtenstein
 Luxembourg
 Monaco
 Morocco[1]
 Netherlands
 New Zealand[7]
 Norway
 Oman
 Papua New Guinea[3]
 Qatar
 Saint Lucia
 Saint Vincent and the Grenadines
 Saudi Arabia
 Solomon Islands
 Spain
 Sweden
 Thailand
 Tonga
 Tuvalu
 United Kingdom[8][1]
  Vatican City
Unitary states with a unique form of government
    
See also
    
    
References
    
- "What is a Unitary State?". WorldAtlas. August 2017. Retrieved 2019-02-22.
 - "Democracy". www.un.org. 2015-11-20. Archived from the original on 2021-02-13. Retrieved 2019-02-22.
 - Ghai, Yash; Regan, Anthony J. (September 2006). "Unitary state, devolution, autonomy, secession: State building and nation building in Bougainville, Papua New Guinea". The Round Table. 95 (386): 589–608. doi:10.1080/00358530600931178. ISSN 0035-8533. S2CID 153980559.
 - "unitary system | government". Encyclopedia Britannica. Retrieved 2017-08-11.
 - Faulconbridge, Guy; Ellsworth, Brian (2021-11-30). "Barbados ditches Britain's Queen Elizabeth to become a republic". Reuters. Retrieved 2021-11-30.
 - See also Political status of Taiwan, two Chinas and Cross-Strait relations.
 - "Story: Nation and government – From colony to nation". The Encyclopedia of New Zealand. Manatū Taonga Ministry for Culture and Heritage. 29 August 2013. Retrieved 19 April 2014.
 - "Social policy in the UK". An introduction to Social Policy. Robert Gordon University – Aberdeen Business School. Archived from the original on 4 July 2014. Retrieved 19 April 2014.
 -  Gul, Ayaz (28 September 2021). "Taliban Say They Will Use Parts of Monarchy Constitution to Run Afghanistan for Now". Voice of America. Islamabad, Pakistan. Retrieved 21 October 2022. 
The Taliban said Tuesday they plan to temporarily enact articles from Afghanistan's 1964 constitution that are 'not in conflict with Islamic Sharia (law)' to govern the country.
 -  "1964 Constitution of Afghanistan". University of Nebraska-Omaha. Retrieved 21 October 2022. 
Afghanistan is a Constitutional Monarchy; an independent, unitary and indivisible state.
 - George, Susannah (18 February 2023). "Inside the Taliban campaign to forge a religious emirate". The Washington Post. Retrieved 19 February 2023.