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Daniel Berlyne believes that play helps children
Opportunity Costs
The cost of foregone alternatives; the benefits one misses out on by choosing one option over another.
Nations
Politically organized territories with defined borders, a common government, and a shared cultural or historical identity.
Technologies
Encompasses the collection of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation.
Comparative Advantage
The ability of an individual, company, or nation to produce a good or service at a lower opportunity cost than its competitors.
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