Complex sentence: It is currently used by the House of Saud, the royal family of Saudi Arabia, it has been sometimes used in Morocco by the Alaouite dynasty until it has been definitly abolished by King Mohammed V who made the throne clearly Agnatic primogeniture.
Split into simpler sentences: It is currently used by the House of Saud, the royal family of Saudi Arabia. It was sometimes used in Morocco by the Alaouite dynasty until it was definitely abolished by King Mohammed V who made the throne clearly Agnatic primogeniture.