These are the conditions that allow monopolies to exist.
What are barriers to entry?
This is a market that runs most efficiently when one large firm supplies all of the output.
What is a natural monopoly?
Examples are produce items, petroleum, and copy paper.
What are commodities?
This is an agreement among firms to divide the market, set prices, or limit production.
What is collusion?
This is a long-surviving cartel in the petroleum industry and the approximate percentage of the market it controls.
What is OPEC, and 70%?
This is making a product similar, but not identical to other products in the market.
What is differentiation?
This is the combination of two or more companies into a single firm and the group able to approve or deny the action.
What is a merger and the government?