Examlex
The population of Oriol City in June 2018 was 612,437.According to the Oriol City's health department,there were 329 new cases of Raven's disease during 2018.Counting those new cases,by December 31 it was estimated that there were 6580 persons with Raven's disease in Oriol City.What was the prevalence of Raven's disease in 2018?
North Korea
An East Asian country officially known as the Democratic People's Republic of Korea, noted for its centralized economy and autocratic government.
Specialization
The use of the resources of an individual, a firm, a region, or a nation to concentrate production on one or a small number of goods and services.
Production
The act of creating goods or services using labor, equipment, and natural resources.
Coincidence-of-wants
A situation in barter economies where two parties each have something the other wants, facilitating a direct exchange without the need for money.
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