Abd al-Mumin vs Alfonso X of Castile

After the death of Ibn Tumart, Abd al-Mumin was proclaimed caliph of the Almohad movement. He consolidated the Berber tribes of the High Atlas under Almohad doctrine, establishing the foundation for a new dynasty that would challenge Almoravid rule.

Abd al-Mumin captured Marrakesh, the capital of the Almoravid Empire, after a prolonged siege. The Almoravid ruler Ishaq ibn Ali was killed, and the city became the Almohad capital, marking the end of Almoravid rule in North Africa.

Abd al-Mumin extended Almohad control across the Maghreb, conquering cities such as Fez, Tlemcen, and Algiers. He defeated local Berber dynasties and unified the region from the Atlantic to Tripolitania under a single centralized administration.

Abd al-Mumin launched a campaign into Al-Andalus, capturing cities including C

Abd al-Mumin implemented a centralized administrative system across his empire, appointing governors and judges loyal to the Almohad doctrine. He standardized taxation and military organization, creating a stable state structure that lasted for decades.

Alfonso X commissioned the Alfonsine Tables, a set of astronomical tables based on Ptolemaic models. These tables were used by European astronomers for centuries and became a standard reference in medieval science.

Alfonso X of Castile was elected King of Germany by a faction of prince-electors, opposing Richard of Cornwall. This election was part of the Great Interregnum, with Alfonso receiving support from the Hohenstaufen loyalists and the Papacy.

Alfonso X never traveled to Germany to assert his claim to the throne. His absence weakened his authority, and he was unable to secure effective control over the German kingdom, leaving the title contested.

Alfonso X formally renounced his claim to the German throne in favor of Rudolf of Habsburg. This renunciation ended the Great Interregnum and allowed Rudolf to be recognized as the legitimate king of Germany.