Chadian nationality law is regulated by the Constitution of Chad, as amended; the Chadian Nationality Code, and its revisions; and various international agreements to which the country is a signatory. These laws determine who is, or is eligible to be, a national of Chad. The legal means to acquire nationality, formal legal membership in a nation, differ from the domestic relationship of rights and obligations between a national and the nation, known as citizenship. Chadian nationality is typically obtained under the principle of jus soli, i.e. by birth in Chad, or jus sanguinis, born abroad to parents with Chadian nationality. It can be granted to persons with an affiliation to the country, or to a permanent resident who has lived in the country for a given period of time through naturaliz