What characteristic has to be present for a government to be an oligarchy?

Oligarchy comes from the Greek meaning the rule of the few, and it's often used as a pejorative way of alluding to aristocracy; to consider a government as oligarchy the power of a nation or country must be held by a small group, or few privileged people, and usually the way of governing is despotic, unjust and exercised by incompetent rulers instead of the best and most suitable people.

Explanation:

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

the intolerable acts were punitive laws passed by the british parliament in 1774 after the boston tea party. in great britain, these laws were referred to as the coercive acts.