Examlex
Which period did not end with mass extinction?
Coincidence of Wants
A situation in a barter economy where two parties each possess goods or services that the other wants, facilitating a direct exchange without the need for money.
Barter
The direct exchange of one good or service for another good or service.
Medium of Exchange
An intermediary instrument or system used to facilitate the sale, purchase, or trade of goods between parties.
Specialization Restrictions
Limitations or regulations set on the extent to which individuals or entities can focus on producing a particular product or service.
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