In population, estimates range from maybe six to 12 million people; ... On the other hand, there was nothing remotely as large as the Inca Empire, and they innovated in a variety of ways.

The Incas began conquering nearby kingdoms in the mid-1400s, and in less than a century they had subdued a population of 12 million.The nearly 25,000 miles of roads they built, many through ...

“Our analyses show that the population at Machu Picchu was highly heterogeneous, with individuals exhibiting genetic ancestries associated with groups from regions throughout the Inca Empire ...

Workers and retainers at the famous mountain estate came from throughout the empire, with some even coming from the Amazonas region. A llama is seen near the Inca citadel of Machu Picchu in Cusco ...

Archaeologists found two 500-year-old quarries in Cañete mountains and trail transport network from final stage of Inca empire, photos show.