The term 'citizenship' refers to the relationship that exists between a natural person and the State, with the legal system recognizing full civil and political rights, according to the provisions of Law n° 91/1992. Italian citizenship can be acquired in the following ways: - "Iure sanguinis": in case of birth or if a child is adopted by Italian citizens. - "Iure soli": in the event of birth in the national territory from stateless parents or if the parents are unknown or if the parents cannot transmit their nationality to their child due to a law of the State of origin. - Foreign nationals who have been residents in Italy for at least ten years. - By Marriage.