The Almohad Movement and Caliphate: Expansion and Fragmentation

The Almohad movement began among the Masmuda Berber communities of the High Atlas in the early twelfth century. It grew from a religious reform campaign into a caliphate that, by the later twelfth century, ruled much of the Maghreb and al-Andalus, the Muslim-ruled parts of the Iberian Peninsula. Its expansion depended on the movement’s tribal base and military organization, while its later fragmentation reflected defeats in Iberia, disputes over succession, and the growing autonomy of provincial powers. Almohad rule in Marrakesh ended in 1269.

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Ibn Tumart and the formation of a movement

The movement’s founder, Ibn Tumart, was a member of the Hargha, a Masmuda group from the region of Sous in present-day Morocco. He preached a programme of religious reform that challenged the Almoravid rulers, whose authority rested in part on the Maliki school of Islamic law, then influential across the region. Ibn Tumart condemned what he regarded as excessive dependence on established legal opinion and insufficient attention to religious practice. His teaching placed tawhid, the absolute unity of God, at its centre. The name Almohad derives from al-Muwahhidun, meaning those who affirm divine unity.

Ibn Tumart’s teaching did not fit neatly into a single established theological tradition. He drew on religious ideas encountered in different settings, but the details of his education and some stories about his life remain uncertain. Accounts of his career were also shaped by later efforts to establish the authority of the Almohad rulers. His followers recognized him as the Mahdi, an expected divinely guided leader, and accepted his authority as both religious guide and political head.

After preaching in towns including Fez and Marrakesh, Ibn Tumart found support among the mountain communities of the High Atlas. Tinmel, a defensible settlement in the Nfis valley, became the movement’s base and religious centre. The remote location offered protection from Almoravid forces, while the mountain passes allowed the Almohads to threaten routes linking Marrakesh with the south and the trans-Saharan trading centre of Sijilmassa.

The community was organized through councils and a hierarchy that connected religious leadership to tribal groups. Ibn Tumart’s closest early companions formed a Council of Ten, while a broader Council of Fifty included leading Masmuda sheikhs. Preachers and religious teachers helped spread the movement’s teachings. This organization provided a way to mobilize followers and maintain discipline, but it also gave the founding tribes a privileged position. Accounts describe severe measures against people judged disloyal, although details of the purges associated with Ibn Tumart are difficult to establish securely.

In 1130, an Almohad assault on Marrakesh ended in defeat at the Battle of al-Buhayra. The loss of leaders and fighters, followed soon afterward by Ibn Tumart’s death, might have broken the movement. Instead, Abd al-Mumin, a Zenata Berber from the central Maghreb and one of Ibn Tumart’s close followers, emerged as his successor. His authority took time to secure, and the announcement of Ibn Tumart’s death was delayed. This transition shifted the movement from a mountain-based religious coalition toward a state led by a ruling dynasty.

From mountain stronghold to Maghrebi caliphate

Under Abd al-Mumin, Almohad forces expanded beyond the Atlas. Their advance gathered pace in the 1140s, as local groups and tribal leaders joined them and Almoravid control weakened. The Almohads took Tlemcen in 1144, captured Fez after a lengthy siege, and seized Marrakesh in 1147. The fall of Marrakesh ended Almoravid rule there and gave the Almohads control of a major political centre. Abd al-Mumin claimed the title of caliph, establishing a caliphate that combined political rule with the movement’s religious claims.

Conquest did not eliminate the need to negotiate with powerful regional groups. Abd al-Mumin built a broader military coalition while limiting the dominance of the original Masmuda leadership. He recruited members of his own Kumiyya tribe into important military roles. After defeating Arab groups, including the Banu Hilal, at the Battle of Sétif in 1153, he also brought Arab forces into the Almohad military. These contingents became important in campaigns across the Maghreb and al-Andalus. Tribal leaders continued to help organize troops and could hold command or governorships, so the army and administration depended on relationships with groups whose loyalties had to be maintained.

Abd al-Mumin extended Almohad authority eastward into the former Hammadid territories, taking Béjaïa in 1152. A further campaign brought much of Ifriqiya, roughly present-day Tunisia and neighbouring areas, under Almohad rule by 1159–1160. Tunis and Tripoli came under their authority, and Mahdia, then held by the Normans of Sicily, surrendered in 1160. These campaigns brought a large stretch of the North African coast and interior under one government, but the distance between provinces made control dependent on local governors, garrisons, and allied groups.

The caliphate retained some earlier administrative divisions while placing governors in important cities and provinces. In the first phase, trusted movement leaders held office; Abd al-Mumin increasingly appointed members of his family to govern. The councils that had helped organize the early movement remained part of the political order, but authority became more concentrated in the caliph and his dynasty. This change strengthened central rule while making succession within the ruling family more consequential.

Almohad rule in al-Andalus

Almohad armies gradually replaced Almoravid and local Muslim rulers in al-Andalus, the Muslim-ruled parts of Iberia. Seville became a principal base, but eastern resistance continued into the 1170s. The Balearic stronghold of the Banu Ghaniya remained outside their control until the conquest of Majorca in 1203. Expansion therefore proceeded through regional campaigns rather than one transfer of the entire western Islamic world.

The Almohads fought repeatedly against the Christian kingdoms of the peninsula. Their victory over Alfonso VIII of Castile at Alarcos in 1195 strengthened their position for a time. In 1212, however, Caliph Muhammad al-Nasir was defeated at Las Navas de Tolosa by an alliance led by Castile, Aragon, and Navarre. The defeat did not end Almohad rule immediately, but it weakened the caliphate’s ability to sustain its military position in Iberia and encouraged challenges to its authority.

Religious policy also shaped the experience of Almohad rule. The Almohads rejected the established protected status, known as dhimma, which had allowed Jews and Christians to practise their religions under Muslim rule subject to particular obligations. Under Abd al-Mumin, many Jewish and Christian communities in Morocco faced pressure to convert after a short period of grace. Persecution and coercion also affected communities in al-Andalus; some people fled to Christian territories or elsewhere, while some converts continued to practise their earlier religion privately. Policy could change: the later caliph Idris al-Ma’mun broke with parts of the founding doctrine and allowed Jews and Christians greater freedom in Marrakesh.

The movement also made use of both Berber and Arabic. Ibn Tumart preached in Berber, and Almohad practice included sermons in both Berber and Arabic. Arabic remained important to written government and scholarship, while the use of Berber helped communicate the movement’s teachings among its original supporters. These features reflected a state built from distinct regional and linguistic communities rather than a uniform population.

Succession struggles and the loss of central control

After Las Navas de Tolosa, military pressure coincided with problems at the centre of the state. Muhammad al-Nasir died in 1213, leaving a young successor, Yusuf II. When Yusuf died without an heir in 1224, rival members of the ruling family and political elites backed competing claimants. The resulting coups and divisions weakened the caliphate’s ability to coordinate its provinces. In al-Andalus, the struggle drew troops and resources toward Morocco, leaving local authorities less able to respond to raids and uprisings.

Andalusi cities increasingly turned to local leaders rather than relying on Almohad governors. Ibn Hud became a leading figure in this revolt against central authority. In 1228, Idris al-Ma’mun left Seville for Morocco with much of the Almohad force still in Iberia. Almohad control there effectively collapsed. Christian rulers then captured major cities over the following decades: Córdoba fell to Castile in 1236 and Seville in 1248. The Nasrid rulers established an independent power centred on Granada, where Almohad authority did not return.

In North Africa, the Hafsids established independent power in Ifriqiya and the Zayyanids ruled around Tlemcen. Marinid forces took Meknes in 1247 and Fez in 1248, then expanded over much of the western Maghreb during the 1250s. The Almohads retained Marrakesh through local resistance and shifting alliances, but their control of the wider region steadily contracted.

The end of Almohad rule

Political division also weakened the religious basis on which the Almohad state had been founded. During his contest for power, Idris al-Ma’mun repudiated Ibn Tumart’s status as the Mahdi and abandoned important parts of the movement’s doctrine. A later ruler restored some of the founding claims, but the break showed that the caliphate’s religious authority was contested even within its ruling house.

In 1269, Marinid forces captured Marrakesh and removed the last Almohad caliph, Idris al-Wathiq. This ended Almohad rule in the western Maghreb. The movement that had begun as a tightly organized reform coalition in the High Atlas had built an empire across North Africa and al-Andalus, but its reliance on dynastic leadership, military alliances, and distant provincial governors left it vulnerable when defeats and succession disputes weakened central authority.

For the wider setting, see The Almohad Caliphate: History, Government and Society.