Inca had a vast empire and needed to better control it somehow. This was how the idea for a big system of roads came about. Because if they did have this system of roads it would be easier to travel, send messages, trade, and send out troops. It was an incredible innovation created by the Incas and was a genius idea that was put into the making.

This invention was made by using materials such as stone, sand, gravel, and wood. When building these roads they made sure that each of the roads were built to better adapt to the area that it is in. They also have many important features like suspension bridges and causeways. The roads were also built with drainage systems, retaining walls, and stone paving. Along the roads there were things built like markers and tampus which were waystations for travelers which stored goods and supplies. To actually build the roads they used locally sourced materials and a labor tax system called mit'a where each household was required to work for the state each year for a certain period of time on different projects an example being the road system.

The roads impacted later civilizations by providing a pre-existing set of roads for the Spanish colonizers to use and continue to develop over time. It was used as a blueprint for more roads to be created in the future for colonizers. When the empire got colonized by the Spanish the roads were repurposed for things like economical reasons and to access more resources like mines.