It officially became part of Denmark in 1953, though since then Greenland has been granted a lot of authority to govern itself making its government autonomous.
The monarch King Louis XVI based his authority on divine right and granted special privileges to the First and Second Estates, the Catholic clergy, and the nobles.
The third standardizes what happens if the President becomes incapacitated, and has to temporarily grant power to the Vice President, which has most commonly been used for medical reasons.