What were some engineering feats of the Inca?

The Inca civilization is renowned for its remarkable engineering achievements, including the construction of extensive road networks that spanned over 25,000 miles, facilitating trade and communication across their vast empire. They Excelled in agricultural engineering, developing terraced farming on steep mountainsides, which maximized arable land and minimized soil erosion. Additionally, their impressive stone masonry, exemplified by structures like Machu Picchu, showcased their ability to create earthquake-resistant buildings using precisely cut stones that fit together without mortar. The Inca also implemented advanced irrigation systems, effectively managing water resources in their arid regions.