The Incas farmed on things called terrace. They cut flat steps on the side of the mountain and farmed there. The Incas started started there conquest of the Western South America at the same time the Aztec emerged in mesoamerica. The empire expanded rapidly.
The Inca were very good engineers and built bridges and aqueducts. They also built a major city called Machu Picchu. Machu Piccu sits high on a mountain in Peru. The Spanish never found the city because it was on top of a mountain.
The Northwest culture was skillful in wood carvings. They made totem poles that were tall and elaborately carved and painted tree trunks that honored a guardian or being with the family. The totems included color, animals, and carvings of chiefs or ancestors. The Northwest had many rivers and oceans.
Pueblo Bonito was a settlement that the Ancient Pueblo lived in. Pueblo Bonito was located in Chaco Cayon in northern Mexico