1) Please view the following video on youtube.

https://www.youtube.com/watch?v=l6Udc6uDX8o

At 2:20 into the video, four economic varibable changes that may affect the Aggregate Demand. On a piece of paper please explain how each factor affects AD. Show possible shifts and the new equilibriums after the change. Be sure to explain the reason for the shift and what direction price and output in the Economy.