
Events 820s – Spinach comes to Europe
Spinach is introduced to Europe Events 820: Muḥammad ibn Mūsā al-Khwārizmī writes his treatise on Algebra The Compendious Book on Calculation by Completion and Balancing. 825: Battle of Ellandun: King Egbert of Wessex defeats Mercia and establishes the kingdom of Wessex as the supreme Kingdom in England. 827–902: Aghlabids established emirate (province) in Sicily and subsequently raids Southern Italy. The Saracens, who found spinach originally in Persia (modern Iran), introduce the plant to Sicily