Caliph Al-Ma'mun ruled the Abbasid Caliphate from 813 to 833 CE. He is known for his support of science, philosophy, and the arts, which led to a flourishing of intellectual activity during his reign. Al-Ma'mun established the House of Wisdom in Baghdad, where scholars from various cultures gathered to translate and study ancient texts. Under Al-Ma'mun's leadership, the Islamic Golden Age reached new heights. He promoted the work of notable scholars, including Al-Khwarizmi, who contributed to mathematics and astronomy. Al-Ma'mun's emphasis on knowledge and learning helped shape the future of science and philosophy in the Islamic world.