when did the inca civilization flourish? how many miles did the inca empire span? at its height, how many people did in a empire have?

The Inca Empire, which flourished from approximately 1200 to 1533 AD, was the largest ancient civilization in pre-Columbian America. Arising from the Andean highlands of Peru sometime in the early 13th century, the Incas established their capital in the city of Cusco, located in modern-day Peru.