NAME ONE OF THE INCAS GREASTED ACHIEVEMENTS. WHY WAS IT GREAT? DESCRIBE IT IN DETAIL!

One of the Incas' greatest achievements was their extensive road system, known as the "Qhapaq Ñan." This road network spanned over 25,000 miles and connected the vast Inca empire. The roads were built with stunning engineering skill, often cut into mountainsides or bridging over deep valleys.

The Qhapaq Ñan provided efficient transportation for people, goods, and information. Runners, known as "chasquis," relayed messages across the vast distances using a system of signal towers and knotted cords called "quipus." The roads also facilitated the movement of troops and tribute, enabling the rapid expansion of the Inca empire.

This extraordinary feat of engineering and organization made communication and trade much easier and faster throughout the empire. It also allowed for the spread of Inca culture and ideology, as well as the transportation of goods and information that facilitated the growth of their economy. Overall, the Qhapaq Ñan was truly a remarkable achievement that played a crucial role in the success and sustainability of the Inca empire.