Answer :
Models that focus on factors other than changes in the money supply to explain fluctuations in real GDP are called real business cycle models.
What is Real Business Cycle Models?
A family of new classical macroeconomics models known as real business-cycle theory uses real (as opposed to nominal) shocks to explain business-cycle fluctuations (RBC theory).
In conclusion, business cycles regularly occur. Despite not showing the same regularity, they do go through phases that are easily identifiable, such as expansion, peak, contraction, depression, and trough. A cycle can last anywhere between two years at its shortest and 10 to 12 years at its longest.
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