Answer:
A simplified description of reality to understand and predict an economic event.
Explanation:
An economic model is defined as a theoretical construct u<em>sed to simplify and represent an economical scenario</em> with <em>its variables that can be measured to determine and prevent future events.</em>
I hope you find this information useful and interesting! Good luck!
A. proposal by Congress; ratification by state legislatures
The answer is D. There were many job opportunities available in the North.