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January 14, 2025 

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ENTRY BARRIER: An institutional, government, technological, or economic restriction 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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KEYNESIAN CROSS: The standard diagram used in Keynesian economics to identify the equilibrium level of aggregate output (that is, gross domestic product), with aggregate expenditures measured on the vertical axis, and aggregate output measured on the horizontal axis. This diagram contains two key lines, the aggregate expenditure line and the 45-degree line. Intersection between these lines indicates equilibrium aggregate output. This intersection, or cross, is what gives rise to the name.

     See also | Keynesian economics | equilibrium | Keynesian equilibrium | aggregate output | gross domestic product | aggregate expenditures | vertical axis | horizontal axis | aggregate expenditure line | 45-degree line | saving-investment model | Marshallian cross |


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KEYNESIAN CROSS, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: January 14, 2025].


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GOVERNMENT SUBSIDIES

Transfer payments from the government sector to the business sector that do not involve current production. This is one component of the official entry government subsidies less current surplus of government enterprises found in the National Income and Product Accounts maintained by the Bureau of Economic Analysis that separates national income (the resource cost of production) and gross (and net) domestic product (the market value of production).

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Today, you are likely to spend a great deal of time looking for a downtown retail store hoping to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for slightly overweight pizza delivery guys.
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
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