The answer to the question above is letter "A. drought". This natural disaster caused trouble to the citizens especially those who are in rural areas and are dependent on ecosystem services and natural resources for their livelihood. They were urged to find alternatives.
I think this question is meant to be placed in the Geometry category. :)
On what do you need help on because it doesn't show on what do you need help.
The correct answer is economic because economic is money oriented
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.