Nigeria

=== Law ===
{{Main|Law of Nigeria}}
The [[Constitution of Nigeria]] is the supreme law of the country. There are four distinct legal systems in Nigeria, which include [[English law]], [[common law]], [[customary law]], and  [[Sharia|Sharia law]]:
* English law in Nigeria consists of the collection of British laws from colonial times.
* Common law is the collection of authoritative judicial decisions in the field of civil law (so-called precedents) that have been handed down in the country concerned - in this case Nigeria. (This system is mainly found in Anglo-Saxon countries; in continental Europe, on the other hand, codified and, as far as possible, abstracted civil law predominates, as in the [[Napoleonic Code]] in France).<ref>{{cite book|last1=Siliquini-Cinelli|first1=Luca|url=https://books.google.com/books?id=l9ifDgAAQBAJ&q=English+law+in+Nigeria+is+derived+from+the+colonial+Nigeria%2C+while+common+law+is+a+development+from+its+post+colonial+independence.&pg=PA173|title=The Constitutional Dimension of Contract Law: A Comparative Perspective|last2=Hutchison|first2=Andrew|date=2017-04-06|publisher=Springer|isbn=978-3-319-49843-0}}</ref>
* Customary law is derived from indigenous traditional norms and practices, including the dispute resolution meetings of pre-colonial Yoruba land secret societies and the [[Egbo|Èkpè]] and Okónkò of [[Igboland]] and [[Ibibio people|Ibibioland]].<ref>{{cite web |last=ProjectSolutionz |date=2021-06-22 |title=Law and the political structure in Nigeria |url=https://projectsolutionz.com.ng/law-and-the-political-structure-in-nigeria/ |access-date=2022-07-08 |website=ProjectSolutionz |language=en-US}}</ref>
* Sharia law ''(also known as Islamic Law)'' used to be used only in [[Northern Nigeria]], where [[Islam]] is the predominant [[religion]]. It is also being used in [[Lagos State]], Oyo State, Kwara State, Ogun State, and Osun State by Muslims. Muslim penal codes are not the same in every state and they differentiate in punishment and offences according to religious affiliation (for example, alcohol consumption and distribution).

The country has a [[judicial branch]], the highest court of which is the [[Supreme Court of Nigeria]].<ref>{{cite web |url=https://www.cia.gov/the-world-factbook/countries/nigeria/ |title=Africa :: Nigeria |publisher=[[Central Intelligence Agency]] (United States) |work=[[The World Factbook]]|date=12 September 2022 }}</ref>