Answer: Naturalization.
Step-by-step explanation:
Naturalization is a legal and legal procedure in which a foreign citizen acquires a certain country's citizenship. For the naturalization process to occur, it is necessary to meet certain conditions that are different and depend on the policy of a particular country. Factors that depend on naturalization are different, knowledge of a certain country's law, respect for the law, age limit, the will for a person to eventually renounce his old citizenship, etc.