What famous Muslim sultan successfully united various Muslim factions and recaptured Jerusalem from the Crusaders in 1187?
What major city was the intellectual and cultural heart of the Islamic Golden Age, renowned for its 'House of Wisdom' (Bayt al-Hikma)?
Founded in 1088, which Italian university is widely considered the oldest continuously operating university in the world?
Which powerful dynasty ruled the Byzantine Empire for over two centuries (from 867 to 1057 CE), overseeing a period of military expansion and cultural flourishing?
The Reconquista, the centuries-long effort by Christian kingdoms to reclaim the Iberian Peninsula, culminated with the fall of which city in 1492?
Before Emperor Constantine rebuilt and renamed it, what was the ancient Greek city upon which Constantinople was founded?
Which pivotal battle in 732 CE is often credited with halting the northward advance of the Umayyad Caliphate into Western Europe?
What year marks the 'Great Schism' or East-West Schism, when the Christian Church formally divided into the Roman Catholic and Eastern Orthodox branches?
Which emperor of the Mali Empire is renowned for his incredibly lavish pilgrimage to Mecca in the 14th century, which significantly impacted the economies of the regions he passed through?
While Johannes Gutenberg is famous for his European printing press, who invented the world's first known movable type printing system in China around 1040 CE?