Fatimids Conquer Egypt and Found Cairo

The Fatimids conquer Egypt and found Cairo as their new capital. Maslama al-Majriti brings Al-Khawarizmi’s algebra and astronomical tables to Al-Andalus. The French monk, Gerbert of Aurillac — having studied mathematics in Barcelona, Córdoba and Seville — tutors Otto II, the future Holy Roman Emperor. In 999, Gerbert is elected Pope and takes the name Sylvester II.