would be Cordova in modern Spain.?

Question:It was the biggest city in the world in 1000 AD

Best Answer - Chosen by Asker: It was the biggest city in the world in 1000 AD

It was and is Cordoba, it is located in the region of Andalusia in the south of Spain and it is one of the country's prominent cities. Cordova is one of its spellings mostly used by English speakers.