What Did the Incas Give Us?

The Incas grew from a small tribe to being South America's largest empire in the pre-Columbian era. They also created an extensive network of roads and some of these roads can still be seen today. The Spanish conquistadors arrived and brought European diseases which were new to the Incas like the flu, influenza and smallpox as well as that Civil War broke out at the same time as the Spanish invasion. So the Spanish arrival was pretty much the end for the Incas.