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BANK PANIC OF 1907: A relatively serious economic downturn, that is business-cycle contraction, in 1907 that was caused by serious, big-time, instability in the banking system. This major bank panic was so severe (the term depression is more applicable than recession) that it prompted Congress to establish the Federal Reserve System, which came into existence in 1913. See fractional-reserve banking.

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FOUR-FIRM CONCENTRATION RATIO

The proportion of total output in an industry produced by the four largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the four largest firms in the industry.

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Today, you are likely to spend a great deal of time at an auction seeking to buy either a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a wall poster commemorating the 2000 Olympics. Be on the lookout for crowded shopping malls.
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A half gallon milk jug holds about $50 in pennies.
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