It's the sound that around five hundred years ago accompanied the building of an empire, the Empire of the Inca - bigger than Ottoman Turkey, bigger than Ming China, in fact, the largest in the world.

But military victory was only the first step in the Inca's grand strategy of empire building. Officials next set about establishing civil control. Women waiting for a lift at Abra Málaga wear ...

"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 ...

"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 ...