What was a similarity between Islamic caliphate a during the Islamic golden age and Western European kingdoms following the fall of the Roman Empire?

Both the Islamic caliphate during the Islamic Golden Age and the Western European kingdoms following the fall of the Roman Empire experienced significant cultural and intellectual advancements. In the Islamic caliphate, scholars made remarkable contributions in fields such as mathematics, astronomy, and medicine, while Western European kingdoms began to revive and preserve classical knowledge, leading to the Carolingian Renaissance. Additionally, both regions saw the fusion of various cultural influences, with the Islamic world incorporating Greek and Persian ideas, and Europe integrating remnants of Roman and Germanic traditions. Ultimately, both periods laid foundational elements for future societal developments in their respective regions.