What is collective naturalization?
a process by which members of a whole group of people living in the same geographic area become American citizens through an act of Congress.
Naturalization: The process by which a green card holder becomes a United States citizen. Generally, a person is eligible for naturalization when he or she has had a green card for the appropriate. Naturalization Certificate: A certificate issued by the United States government attesting to a former alien's status as a US citizen.