In the ninth century, while much of Europe was struggling through a period of political fragmentation, Baghdad was the intellectual capital of the world. At the heart of this flourishing culture stood the Bayt al-Hikma, or House of Wisdom — a library, translation centre and academy that attracted scholars from across the known world.
Under the of Abbasid caliphs such as al-Ma'mun, translators into Arabic the works of Greek, Persian and Indian thinkers, from Aristotle's philosophy to Indian mathematics. Crucially, this was not passive . Scholars scrutinised, corrected and expanded upon the texts they translated, producing original work of profound significance.
Among them was Muhammad ibn Musa al-Khwarizmi, whose on calculation gave us the word "algebra" (from al-jabr), and whose own name, in Latin form, became "algorithm". The adoption of the Hindu-Arabic , including the concept of zero, transformed mathematics and commerce alike. Other scholars made notable advances in astronomy, medicine and .
The House of Wisdom met a tragic end in 1258, when Mongol forces Baghdad. wrote that so many books were thrown into the Tigris that its waters ran black with ink. Yet the knowledge it had cultivated did not vanish. Carried through Al-Andalus and Sicily into Latin translations, it upon which the European Renaissance would later build — a reminder that the history of science is a shared human endeavour rather than the achievement of any single civilisation.