How can an oligopoly cause market failure​

Inefficiency, instability and indeterminacy brought about by oligopoly may result in a market crash. The firm's supremacy is established as the capacity is established more and more, but little is produced in order to create artificial barrier to entry.

Explanation:

The promise of bigger profits gives oligopolists an incentive to cooperate. However, collusive oligopoly is inherently unstable, because the most efficient firms will be tempted to break ranks by cutting prices in order to increase market share.

answer the amount a seller is paid minus the cost of production;

answerthat 50% of all cases go to trial;