Well I normally would disagree with the idea entirely, but considering as the
Cordoba caliphate, infact muslim spain itself, was practically a seperate civilization
unto itself, with other empires coming from it.
Though I would much rather see the visigoths instead, or atleast the barbarians.
the Umayyads in Spain were far from being a separate civ. They were separate politically, but not culturally. They were sunni as most of the muslim Arab world, their major law school was one of those of Middleeastern origin, they celebrated middleeastern poets, scholars and singers. Until X century they didn't even have pretensions to caliphate. So the caliphate period was only a bit longer than 100 years. And half a century later came Almoravids, later Almohads. So even political separation ceased.
No new empires spread from Umayyads of Spain. Only a number of small leftovers that relatively quickly became the prey of Spaniards and Berbers.