30.21
Which best describes the purpose served by economic models within an economic system?
Models identify patterns
Models determine the business cycle.
Models control change.
Models define global demand
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answer: idk

explanation:

warfare was the primary means of cultural transmission in both regions.

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.