 A branch of the Ummayad family fled across North Africa to Al-Andalus, where they established the Caliphate of Córdoba, which lasted until 1031 before falling due to the Fitna of al-Andalus.The Bayt al-mal, the Welfare State then continued under the Abbasids.At its largest extent, the Umayyad dynasty covered more than making it one of the largest empires the world had yet seen, and the fifth largest contiguous empire ever.