the.com/naturalization
The legal glow-up that turns a guest into a citizen, paperwork included.
means The process by which a foreign-born person legally becomes a citizen of a country they weren't born into.
from From Latin naturalis, to make natural — the legal fiction that a country can treat you as if born there, no rebirth required.
Oath requiredMost countries demand a sworn loyalty pledge.
Civics testThe US version trips up many native-born citizens.
Beyond peopleAlso describes foreign species settling into ecosystems.