Authority is power that people view as legitimately exercised over them, while coercion is power they consider unjust.
a. true
b. false

Yes, this is correct.

Authority is usually a good thing, for example the elected President of the Unites States has the authority people people gave him the authority.
On the other hand, coercion is seen rather as a negative concept and a problem (and can be corrected to bullying)

Egypt's grain surplus encouraged people to become artisans, because farmers began to produce food surpluses and those food surpluses could be traded for clay, art pieces, and etc from artisans. Basically, artisans could get food by trading their supplies and work.

Explanation:

i am shure