The third estate included approximately ninety-eight percent of the french population under the old regime. which group was exclusively part of this estate? parish priests of common descent wealthy businessmen landowners impoverished nobility

The group which was exclusively part of this estate was the impoverished group. The Third Estate compromised of the proletariat, which were commoners and peasants who worked on the land. The Third Estate is part of the Estates of the Realm which were the broad social orders of the hierarchically conceived society, common during the Middle Ages and Early Modern Period in Christian Europe.

high entry costs prevent new producers from entering the market.

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.