Allegiance is the obligation of fidelity and obedience which every citizen owes to the state. Allegiance may be renounced by a change of residence.
N.D. Cent. Code § 54-01-23
Duty of citizens - Allegiance defined - How renounced
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.