During the collapse of the Umayyad Caliphate, Abd al-Rahman I escaped to Spain and the Umayyad dynasty ruled over the Islamic Iberia until the 11th century. What if he wasn't able to escape? Would the Abbasids be able to take Spain? Would a local noble or general take over? Would a North African dynasty take over? Would Islamic Spain fracture as it did in the 11th century OTL? Could Shi'ite or Kharijite Islam become dominant in the region?