They used runners to carry verbal messages. Pictographs as representations. An innovation also used was was a 'Quipu'. Which was a complex set of knotted strings. For more information on Quipu see...
The Inca built stone roads which allowed runners to carry verbal messages. The runners worked in relay teams stationed along the roads. One runner told the message to the next. Messages could travel...
Stone roads were a major technological feat of the Inca. Having no writ-en language or knowledge of the wheel, Inca rulers ordered roads built on which runners carried verbal massages to distant...