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MACROECONOMIC SECTORS: The four aggregate sectors of the macroeconomy--household, business, government, and foreign--that reflect four key macroeconomic functions and are responsible for four expenditures on gross domestic product. These four sectors are the primary "actors" on the macroeconomic stage. Macroeconomic theories then explain macroeconomic phenomena by exploring the interaction among these four sectors.

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OLIGOPOLY, CONCENTRATION

Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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APLS

BEIGE MUNDORTLE
[What's This?]

Today, you are likely to spend a great deal of time going from convenience store to convenience store seeking to buy either a rechargeable flashlight or storage boxes for your computer software CDs. Be on the lookout for cardboard boxes.
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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.
"If a man hasn't discovered something that he will die for, he isn't fit to live. "

-- Martin Luther King Jr., clergyman

CJE
Canadian Journal of Economics
A PEDestrian's Guide
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