Why did Cordoba become an international
center of learning in the 900s?

Explanation:

Córdobalso spelled Cordova in English, is a city in Andalusia, southern Spain, and the capital of the province of Córdoba. It is the largest city in the province, 3rd largest in Andalusia, after Sevilla and Málaga, and the 12th largest in Spain. It was a Roman settlement, taken over by the Visigoths, followed by the Muslim conquests in the eighth century and later becoming the capital of the Caliphate of Córdoba. The city served as the capital in exile of the Umayyad Caliphate and various other emirates. During these Muslim periods, Córdoba was transformed into a world leading center of education and learning, producing notable figures such as Averroes, Ibn Hazm, and Al-Zahrawi, and by the 10th century it had grown to be the second-largest city in Europe. It was conquered by the Kingdom of Castile through the Christian Reconquista in 1236.

Cordoba was a center of learning and innovation because of it's vast discoveries of surgery tools like a classic scalpel and a syringe (both items used today.) and a device that could fly and mimic the maneuvers of the cosmos.