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LONG-RUN MARGINAL COST CURVE: A graphical representation of the relationship between long-run marginal cost and the quantity of output produced. Like other marginal curves, the long-run marginal cost curve follows the average-marginal rule relative to the long-run average cost curve. In all outward appearance, the long-run marginal cost curve looks very much like the short-run marginal cost, that is, it is U-shaped. However, the U-shape is attributable to returns to scale rather than increasing and decreasing marginal returns.

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CARTEL

A formal agreement between businesses in the same industry, usually on an international scale, to gain market control, raise the market price, and otherwise act like a monopoly. The most famous international cartel is the Organization of Petroleum Exporting Countries (OPEC), which seeks to exert control over the world oil market. Other cartels have existed, or still exist, in the global markets for uranium, diamonds, long distance telephone services, and airlines.

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius seeking to buy either storage boxes for your summer clothes or 500 feet of coaxial cable. Be on the lookout for gnomes hiding in cypress trees.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
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BIS
Bank for International Settlements
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