Reflect on what you have learned in the first four units of this course and answer the following questions: Explain how gross domestic product is calculated using the income approach and the expend

Reflect on what you have learned in the first four units of this course and answer the following questions:

• Explain how gross domestic product is calculated using the income approach and the expenditure approach.
• Compare the classical economic theory that was used prior to the Great Depression to the Keynesian theory used after the Great Depression.

Your response must be at least 200 words in length. No references or citations are required, but if any are used, they must be cited and referenced in APA Style.