In fact, the superstructure is estimated to hold an almost inconceivable 200 quadrillion (that's 200 followed by 15 zeros) ...

It was the dawn of empire. Massed on a high ... form of computer code—colored and knotted cords known as quipus. And Inca masons raised timeless architectural masterpieces like Machu Picchu ...

The Incas had a system of accounting that relied on the quipu. Cords of various colours were attached to a main cord with knots. The number and position of knots as well as the colour of each cord ...

"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 ...

From the quipu to the conquistadors ... in our series on the Inca Empire. #ExtraHistory #IncaEmpire #History Nasa astronaut trapped in space ventures outside for first time in months Walmart ...

Many researchers think the quipu was used like the rosary beads ... on the system used by the Incas to manage their empire. The sapa Inca himself was the supreme leader of the entire system.

the Empire of the Inca - bigger than Ottoman Turkey, bigger than Ming China, in fact, the largest in the world. Around 1500, the Inca Empire ran for over three thousand miles (5,000 km ...