The caliphal polity whose western governors ruled al-Andalus and campaigned into Gaul.
The Umayyad Caliphate (661–750) was Islam's first dynasty and antiquity's last world-empire builder: from Damascus, Muawiya's house ruled and expanded the conquests to their furthest medieval reach — Visigothic Spain taken (711), the Indus and Transoxiana reached, Constantinople twice besieged, and the raid into Francia turned back at the Battle of Tours (732).
It built the empire's machinery — Arabic coinage and chancery, the Dome of the Rock and Damascus's Great Mosque — and fell to the Abbasid revolution (750); its survivor Abd al-Rahman refounded the house at Córdoba, where the emirate and later caliphate (929–1031) of al-Andalus made Umayyad Spain medieval Europe's most urbane polity until its collapse into the taifas.
Muawiya — Syria's long-time governor, victor of the first fitna after Ali's murder — moved the capital to Damascus (661) and made the caliphate dynastic: Byzantine-trained bureaucracies kept running in Greek until Abd al-Malik's arabisation (690s) minted the aniconic dinar and made Arabic the chancery tongue — state-building visible in the Dome of the Rock (691), Islam's first great monument.
Expansion resumed on all fronts: Ifriqiya and Carthage taken (698); Tariq and Musa crossing to Spain (711), the Visigothic kingdom collapsing at the Guadalete; Sind and Transoxiana entered (Qutayba's campaigns); and the empire's limits found — Constantinople's failed sieges (674–678, 717–718) and the Frankish check at Tours (732) fixing the north-west, the Turgesh and Khazars holding the steppes. The dynasty's fissures ran as deep as its reach: Kharijite revolts, Shia memory of Karbala (680), Arab tribal factionalism (Qays vs Yaman), and the mawali (non-Arab converts) taxed like conquered men — grievances the Abbasid mission organised into the black-bannered revolution that destroyed the house at the Zab (750).
One grandson escaped the massacre: Abd al-Rahman I, "the Falcon of the Quraysh", crossed to Spain and took Córdoba (756), founding an emirate that renounced Abbasid allegiance in fact and, under Abd al-Rahman III (from 929), in name: caliph in his own right, his Córdoba — the Great Mosque's forest of arches growing by reign, the palace-city Madinat al-Zahra rising (936) — the West's largest city, its library-culture proverbial.
The caliphate's zenith was administrative and cultural as much as military: Christian and Jewish communities under dhimma inside a commercial world from the Maghreb to the Rhône, the hajib al-Mansur (Almanzor) running a military dictatorship in the caliphs' name whose raids sacked Barcelona (985) and Santiago (997). His death began the amirate's convulsion: the fitna of 1009–1031 wrecked Córdoba and dissolved the caliphate into the taifa kingdoms — brilliant, competitive, and militarily helpless — whose parias tribute fed Christian expansion until the Almoravids (1086) and Almohads answered.
The Umayyads governed as Arab kings of an Islamic empire: caliphal succession within the house (contested at each generation), provincial super-governors (al-Hajjaj's Iraq the model of iron administration), the diwan army-registers paying Arab tribesmen as a ruling caste, and the dhimmi communities self-administering under tax — a light, extractive imperial frame over Byzantine and Sasanian substructures.
Córdoba refined the model: a palatine bureaucracy of viziers and the hajib, saqaliba (European slave-soldiers and administrators) balancing Arab and Berber factions, jund settlements garrisoning the provinces, and Maliki jurists supplying the religious establishment — a state whose sophistication its Christian neighbours borrowed (and whose mercenaries they hired) even while crusading against it.
Muawiya I, 661–680 — the founder: Syria's governor made dynast.
Abd al-Malik, 685–705 — arabisation, the reformed coinage, the Dome of the Rock.
Al-Walid I, 705–715 — the conquests' zenith: Spain, Sind, Transoxiana; Damascus's Great Mosque.
Umar II, 717–720 — the pious reformer of the mawali's grievances.
Hisham, 724–743 — the last strong Damascus caliph; Tours fell in his reign.
Abd al-Rahman I, emir 756–788 — the survivor who refounded the house at Córdoba.
Abd al-Rahman III, 912–961 — caliph of Córdoba (929): al-Andalus's golden noon.
Al-Mansur (Almanzor), hajib 978–1002 — the dictator-general of the caliphate's armed twilight.
Umayyad religion built Islam's public face: the great mosques (Damascus, Jerusalem's Aqsa, Córdoba), the developing law-schools and Quranic scholarship the dynasty patronised and provoked (its critics — proto-Shia, Kharijite, pious opposition — shaping Islamic thought in resistance), and the pragmatic pluralism of dhimma that kept conquered societies functioning.
Al-Andalus made the culture legendary: Ziryab's Baghdad fashions in ninth-century Córdoba, the translation-and-library boom under al-Hakam II (a catalogue of 400,000 volumes claimed), Ibn Hazm and the Andalusi poets — with Jewish courtier-scholars (Hasdai ibn Shaprut) and Mozarab Christians inside the caliphate's intellectual economy: the convivencia, real and unequal at once, that made Córdoba the medieval West's reference city.