Ethos, just like pathos and logos, are elements of persuasion. ethos is to convince using ethics, or good character, to persuade.
By planting the same crops year after year, the same nutrients in the soil are used up over time. Rotating crops changes how the soil nutrients are used and can even replace nutrients used up by different crops. By rotating crops, the soil is more fertile which leads to higher crop yields.
Answer:
it does not play a role in the economy of the region
<span>A. The north did not allow slavery, while the South depended on it</span>