The answer is B) Inca. Extensive road network across plains, deserts and mountains reaching all corners of the empire was one of the notable features of the Inca empire like terraced farming, canals, crop rotation and irrigation as agricultural innovations. It allowed smooth military operations, trading, and the use of runners or chasquis.
West Africa is mostly a region of plains. Climates range from arid to tropical and they have important agricultural and mineral resources.
Answer:
c. stone even though u put it in ur question but ok
Explanation:
