Death (Discworld) to extend the duration of their existence, by letting them stay in his domain, on the grounds that it wouldn't be the same as actually lengthening their lives. In "The Light Fantastic", Rincewind overhears Twoflower teaching the Four Horsemen of the Apocalypse, (Death, Famine, Pestilence and War) how to play bridge. At one point, War calls out Death with ""Mort"" but we later learn that the only people in the room (other than Twoflower) were Death, Famine, Pestilence and War. The name might be a possible reason as to why Death chose Mort as his apprentice especially as, when Mort
Muslim conquest of the Maghreb a new civil war among rivals for the monarchy raged in Arabia and Syria. It resulted in a series of four caliphs between the death of Muawiya in 680 and the accession of Abd al-Malik ibn Marwan (Abdalmalek) in 685; strife ended only in 692 with the death of the rebel leader. This development brought about a return of domestic order that allowed the caliph to resume the Islamic conquest of North Africa. It began with the renewed invasion of Ifriqiya. Gibbon writes: the standard was delivered to Hassan governor of Egypt, and the revenue of that kingdom, with an