The world in the year 1000 was much smaller and quite different from the world today.
The list below shows the world’s biggest cities, and their estimated populations, at that time:
Cordova, Spain 450,000
Kaifeng, China 400,000
Constantinople (Istanbul), Turkey 300,000
Angkor, Cambodia 200,000
Kyoto, Japan 175,000
Cairo, Egypt 135,000
Baghdad, Iraq 125,000
Nishapur (Neyshabur) Iran 125,000
Al-Hasa, Saudi Arabia 100,000
Patan (Anhilwara), India 100,000
The first trace of human presence in Cordova, Spain are remains of a Neanderthal Man, dating to 32,000 BC.
Cordova was conquered by the Romans in 206 BC, and the city declined especially after Renaissance times.