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OLIGOPOLY: A market structure dominated by a small number of large firms, selling either identical or differentiated products, and significant barriers to entry into the industry. This is one of four basic market structures. The other three are perfect competition, monopoly, and monopolistic competition.

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PERFECT COMPETITION, SHORT-RUN PRODUCTION ANALYSIS

A perfectly competitive firm produces the profit-maximizing quantity of output that equates marginal revenue and marginal cost. This production level can be identified using total revenue and cost, marginal revenue and cost, or profit. Because a perfectly competitive firm faces a perfectly elastic demand curve, it efficiently allocates resources by equating price and marginal cost. In addition, the marginal cost curve above the average variable cost curve is the perfectly competitive firm's short-run supply curve.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time at an auction seeking to buy either storage boxes for your winter clothes or several magazines on time travel. Be on the lookout for slightly overweight pizza delivery guys.
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This isn't me! What am I?

In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
"Do not wait; the time will never be just right "

-- Napoleon Hill, author

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