What are the achievements of al- Hakam II?

Al-Hakam II, the Umayyad Caliph of Córdoba from 961 to 976, is renowned for his significant contributions to the cultural and intellectual flourishing of Al-Andalus. He expanded the caliphate's library, which became one of the largest in the world, and promoted scholarship in various fields, including philosophy, science, and medicine. Under his rule, Córdoba thrived as a center of learning and culture, attracting scholars and poets from across the Islamic world. Additionally, he implemented administrative reforms that strengthened the governance and economy of the caliphate.