Long ago, a group of people ruled a big land. 

Long ago, a leader lived in the mountains. 
After he died, a new leader took over. This leader grew the empire. It became very large. 
They ruled lands in Africa. They also ruled parts of Spain. This was a very big area.
They had many rules for their people. They also had a strong army. People lived under their rule for a long time.
Later, they lost much of their land. Other groups took over. It is interesting to learn about these old lands. 
Long ago, a man named Ibn Tumart started a new movement. 

Ibn Tumart died in 1130. After that, a man named Abd al-Mu'min became the leader. He was a very strong ruler. He led the Almohads to win many battles. By 1159, they ruled much of North Africa. They also took control of parts of Spain. This area was called Al-Andalus.
The empire was very big. They had a strict way to organize their people. They even had a large army with many parts. But things began to change in 1212. A group of Christian forces defeated the Almohads in a big battle. This battle was called the Battle of Las Navas de Tolosa. After this, the Almohads lost much of their land in Spain. They ruled in Africa for a few more years. Eventually, a new group called the Marinids took over their lands. 
The Almohad Caliphate was a strong empire in North Africa. It ruled during the 12th and 13th centuries. This empire was led by a group of Berber Muslims. At its largest size, it controlled much of the Maghreb. It also ruled parts of the Iberian Peninsula, which was called Al-Andalus. 
The movement started with a man named Ibn Tumart. He was part of the Masmuda tribes in the Atlas Mountains. He studied in Spain and Baghdad to learn about religion. He wanted to focus on the unity of God. His followers were called the Almohads. 
After Ibn Tumart died in 1130, a new leader took over. His name was Abd al-Mu'min. He was a very skilled leader. He helped the Almohads grow much larger. In 1147, he captured the city of Marrakesh. This was a major win against the Almoravid dynasty. By 1159, the Almohads controlled almost all of the Maghreb. 
Life in the empire involved many different groups of people. The Almohads had a complex way to organize their society. They had councils to help make decisions. They also had a large army with many specific roles. Some people were treasurers who collected taxes. Others were religious workers like muezzins. 
Things began to change for the Almohads in 1212. A big battle happened at Las Navas de Tolosa. A group of Christian forces defeated the Almohad leader, Muhammad al-Nasir. Because of this loss, the empire began to lose its lands in Spain. Cities like Córdoba and Seville were lost in the years after. 

The Almohad Caliphate was a powerful North African empire. It was ruled by a Berber Muslim dynasty during the 12th and 13th centuries. At its peak, the empire controlled vast areas of the Maghreb and the Iberian Peninsula, known as Al-Andalus. 
The movement began with a man named Ibn Tumart. He belonged to the Masmuda, which was a group of Berber tribes in the Atlas Mountains. Ibn Tumart was a dedicated student of religion. He traveled to Spain and then to Baghdad to deepen his studies. In Baghdad, he studied the theological school of al-Ash'ari and was influenced by the teacher al-Ghazali. He developed a system based on strict unitarianism, or tawhid. This principle emphasized the absolute unity of God. His followers were called the al-Muwaḥḥidūn, meaning "those who affirm the unity of God." 
Ibn Tumart's ideas caused conflict with the ruling Almoravid dynasty. He accused them of being impious and criticized their legal methods. After being expelled from various cities, he established a base at Tinmel in the High Atlas Mountains around 1124. Tinmel served as a spiritual and military headquarters.
After Ibn Tumart died in 1130, the movement continued under Abd al-Mu'min. He was a leader from the Zenata Berber tribe. Even though he was not from the Masmuda tribes, he successfully united the followers. He was officially proclaimed Caliph after a three-year period of secrecy following Ibn Tumart's death. Abd al-Mu'min began a massive expansion of Almohad territory. In 1144, he captured Tlemcen and defeated the Almoravid ruler, Tashfin ibn Ali. By 1147, he captured the city of Marrakesh after an eleven-month siege. 
The empire grew rapidly across the Maghreb and into Europe. By 1159, the Almohads controlled most of the Maghreb. They also extended their reach into Al-Andalus, bringing all of Muslim Iberia under their rule by 1172. 
A major turning point occurred in the Iberian Peninsula in 1212. The Almohad Caliph Muhammad al-Nasir faced a large alliance of Christian forces. This alliance included troops from Castile, Aragon, and Navarre. The Almohads were defeated at the Battle of Las Navas de Tolosa in the Sierra Morena. 

The decline of the Almohads continued in North Africa. Local revolts by different tribes and districts weakened their control. This allowed the Marinids to rise to power starting in 1215. The last leader of the Almohad line was Idris al-Wathiq. He was eventually reduced to ruling only Marrakesh. In 1269, he was murdered by a slave. The Marinids then seized Marrakesh, which officially ended Almohad rule in the Western Maghreb.
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