Citizenship by naturalisation
Section 27(2)(d) · 1999 Constitution (2004 edition)
What Constitution says
(d) he is, in the opinion of the Governor of the State where he is or he proposes to be resident, acceptable to the local community in which he is to live permanently, and has been assimilated into the way of life of Nigerians in that part of the Federation;
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 31–32. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections