The Inca Empire rose to dominate vast regions of South America, building roads, cities, and systems across harsh terrain.

The Inca Empire in South America, one of the most powerful pre-Columbian societies, was known for many innovations — such as the architecture of Machu Picchu, an extensive road network, and a system ...

The Inca Empire in South America, one of the most powerful pre-Columbian societies, was known for many innovations — such as the architecture of Machu Picchu, an extensive road network, and a system ...

"Land of the Four Quarters" or Tahuantinsuyu is the name the Inca gave to their empire. It stretched north to south some 2,500 miles along the high mountainous Andean range from Colombia to Chile and ...

For a scenic trip to the Andes, head to this charming tourist-friendly and white-walled city with a vibrant culture that is ...

Add Yahoo as a preferred source to see more of our stories on Google. Each khipu strand represented its own decimal number. Recordkeeping wasn’t a mundane statistical task in the Incan empire—it was ...

A cotton and agave fiber Inca khipu is seen at an exhibit at the Smithsonian National Museum of the American Indian in 2015 in Washington, D.C. (Brendan Smialowski | AFP via Getty Images) The Inca ...