Respond to the following in a minimum of 175 words:  The aggregate demand and

 
Respond to the following in a minimum of 175 words: 
The aggregate demand and the aggregate supply model allows us to examine how a variety of events can affect the economy.
In your own words, discuss which of the four sources identified with aggregate demand has caused a change in the aggregate demand for a product or service you or your employer use. Share the effect that source has had on how you or your employer contribute to the measurement of aggregate demand.