As noted, the Byzantine Empire continues to exist and is, at least at times, an Anglo-French ally, but is a minor power corresponding to our Greece, its main importance being the control of the strategic Dardanelles. The Osmanlis rule a realm beyond it, apparently never having spread beyond Anatolia. The Kingdoms of Castile and Aragon never united into a single Spanish realm and were never of much account, and Southern Spain is still predominantly Muslim (one story features a suave Muslim from Granada residing in London).