Is it good or bad for a company to have a monopoly on their sector of business

Monopolies are bad because they control the market in which they do business, meaning that they don't have any competitors. ... This means that a monopoly can charge high prices, above fair market prices, produce inferior quality goods, increasing their profits, knowing that consumers will still have to buy their products.

Explanation:

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.