The early history of Al-Andalus during the Islamic era is marked by conflicts and rivalries. When Muslims first arrived in the eastern part of Spain, most regions were under the rule of the Berber kingdoms. Through them, the decline of ancient Greek and Roman civilizations had nearly reached completion. The full advent of Muslims in the lands now known as modern Spain and Portugal enabled an unprecedented advancement in knowledge, science, and technology. This intellectual growth was primarily driven by Islam’s intrinsic encouragement of knowledge.

Significant intellectual progress in Spain began in the 10th century AD. From 912 AD onwards, Abd al-Rahman II, who ruled Spain, played a crucial role in expanding the religious knowledge system and fostering scientific research about the universe.

This was also the period when unparalleled intellectual advancements were taking place under the Abbasid Caliphs in Baghdad. Abd al-Rahman III set up knowledge development projects in Muslim Spain, either matching or surpassing those in Baghdad. He transported as many books as possible from Baghdad, Cairo, and other intellectual centers to Spain and generously rewarded brilliant scholars who came to study.

One of the earliest great scholars to bring the influence of Islamic knowledge from Baghdad to Al-Andalus was Abbas ibn Firnas. He arrived in Córdoba primarily to teach new mathematical sciences. The advanced research facilities in Muslim Spain led him to new inquiries. He experimented with devices for air travel. His numerous attempts even resulted in physical injuries. Later, he established a planetarium to observe the sky and stars.

The primary intellectual disciplines that developed in Islamic Spain were astronomy, medicine, and mathematics. These sciences had strong connections with people’s daily lives, which is why they flourished. By the 10th century, Muslim Spanish mathematicians had begun making fundamental discoveries. One of the most influential scholars who led exceptional intellectual research was Maslama al-Majriti. He authored several works on mathematics and astronomy.

Another remarkable mathematician of 11th-century Córdoba was Al-Zarqali. He formulated theoretical interpretations and validated them through practical experiments. He also perfected devices like the water clock, which greatly aided astronomical research. Another prominent scholar was Al-Bitruji, who authored a book with detailed information on star movements. This work later became a foundational text for European research.

From the time of the Prophet ﷺ, medicine had been a major area of research for Muslim scholars. Quranic verses encouraging the study of the human body and its intricate design inspired Muslim investigations in this field. Ibn Zuhr, who lived in 11th-century Seville, made remarkable contributions to medical science. Another scholar, Ibn Rushd, wrote extensive treatises on medical theories. Ibn al-Khatib made significant discoveries about contagious diseases.

In Islamic Spain, hygiene was established as a fundamental principle of public health. The regulations concerning personal hygiene, bodily cleanliness, and the maintenance of pure environments, as outlined in Islamic jurisprudence, influenced the general societal norms in Muslim Spain. The majority of people followed the Maliki school of Islamic law.

Muslim scholars in Spain also excelled in botany. Ibn al-Baytar compiled a book listing medicinal plants in Arabic alphabetical order. In another work, Ibn al-Awwam classified hundreds of agricultural plants.

Geographical studies also saw extraordinary advancements in Muslim Spain. The travel accounts of Ibn Jubayr serve as an example. Muslim Spain also produced hundreds of scholarly works in history, philosophy, and linguistics.

Sultans established institutions to translate such works into Latin, and scholars from various religions across Europe traveled to Muslim Spain to engage in this knowledge transmission. This is how European lands moved closer to this fountain of knowledge. However, after the fall of Muslim rule in Spain, these intellectual contributions were absorbed into European academia, often stripped of their Arabic origins. It was through such translations and adaptations that Europe later claimed ownership of this intellectual heritage.