Citizenship can be acquired through all of the following methods except

Explanation

Types of citizenship

• Citizenship by Birth. This is for those who were born in Nigeria. Although being born in Nigeria does not automatically confer Nigerian citizenship.
• Citizenship by Descent; This means at least one of the parents of the person is a Nigerian even if the person was born outside of Nigeria
• Citizenship by Registration; This type of citizenship can be obtained by any of the following persons:
  - A foreign woman married to a Nigerian man.
  - Anyone who is of age (17) born outside of the country whose either one or both grandparents is or was a citizen of Nigeria.
  - A foreign child adopted by Nigerian parents. 
• Citizenship by Naturalisation; Anyone who is of full age and has lived in Nigeria for at least fifteen years and has intentions to continue residing in Nigeria. Such person must be familiar with the customs and language of Nigeria and must be able to support himself/herself.