The citizenship of a country can be acquired by an alien through

Citizenship of a country can be acquired by an alien through naturalization. Naturalization is a legal process through which a non-citizen of a country can become a citizen. The process usually involves meeting certain requirements such as residency, language proficiency, passing a citizenship test, and taking an oath of allegiance to the country. After completing the requirements, the individual may be granted citizenship, allowing them to enjoy the full rights and privileges of a citizen of that country, including the right to vote, hold public office, and work without restrictions.