If any person upon whose life any estate in real property depends remains without the United States, or is absent in the state or elsewhere for seven years together, such person shall be accounted dead naturally in any action or proceeding concerning such property in which the person's death shall come in question, unless it is proved affirmatively that the person was alive during that time.
N.D. Cent. Code § 31-11-04
Presumption of death as to estates in real property
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.