The caliphate that has been credited with preserving the achievements of the ancient Greeks during the Middle Ages was the Abbasid caliphate.
The Abbasid Caliphate contributed to the preservation of Greek and other existing knowledge about philosophy, astronomy, medicine, and many other disciplines.
The Abbasid Caliphate was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from the prophet's uncle, Abbas ibn Abdul-Muttalib, from whom the dynasty takes its name.
The Abbasid caliphs established the city of Baghdad in present day Iran in 762 CE. It became a center of learning and the hub of what is known as the Golden Age of Islam.
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