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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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ECONOMIC GROWTH, PRODUCTION POSSIBILITIES

Economic growth is the process of increasing the economy's ability to produce goods and services. It is achieved by increasing the quantity or quality of resources. This process can be illustrated as an outward shift of the production possibilities curve.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers seeking to buy either a handcrafted bird house or a weathervane with a chicken on top. Be on the lookout for cardboard boxes.
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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
"Those who are blessed with the most talent don't necessarily outperform everyone else. It's the people with follow-through who excel. "

-- Mary Kay Ash, May Kay Cosmetics founder

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Generalized Least Squares
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