Essayon DD-AA Briefly describe the structure of the DD-AA model presented in chapter 17! In your own words, explain DD and AA curve and the resulting equilibrium. Specifically, describe why the two curves are upward or downward sloping; what the main factors are shifting these curves; characterize the equilibrium at the intersection of the two curves; and discuss the effects of monetary and fiscal policy. (You can focus throughout on the short run.) You might write about 500 words. Be precise; pay attention to grammar and style. Sloppy submissions will earn zero credit! After you submit and after the due date, you will be assigned to peer review other contributions.