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Abd al-Rahman I, the founder of the Umayyad dynasty in Spain, passed away on September 30, 788. His death marked the end of an illustrious reign that witnessed the establishment and consolidation of Muslim rule in the Iberian Peninsula. During his time, he transformed Córdoba into a thriving cultural and intellectual center, laying the foundation for a prosperous and influential period in Spanish history known as the Umayyad Caliphate.