Plz hurry What building method did the Inca develop to adapt to their geography

the Inca shaped stones to lock together without mortar
the Inca used horses and wheels to haul materials up mountainsides
the Inca constructed most buildings with wood from the Amazon rainforest
the Inca built structures on stilts to protect from flooding

i think its the last one

Explanation:For their city to endure, the Inca had to find a way to keep it from sliding down the mountain. Perhaps the most visually striking features of the drainage system are the agricultural terraces. Machu Picchu includes 4.9 ha of agricultural terraces, which are held in place by stone retaining walls.

the indians crossed artificial boundaries, setting the stage for conflict

the han greatly expands the chinese empire. the han dynasty retains the centralized bureaucracy and unified political system of the qin but adopts and grafts upon this the confucian view that government should be run by educated, ethical men.

explanation: