Economics aggregate expenditure function and GDP

Paper instructions:
Short Paper
You will complete an individual economic research project. The purpose of this assignment is to test your ability to research, analyze, and present economic information. The short essay will include at least one theoretical graph from the text and reference at least three articles, to develop your analysis.
Possible concepts include:

demand and supply for loanable funds
aggregate expenditure function and GDP
short-run aggregate supply curve and variables that move it
long-run aggregate supply curve and variables that move it
macroeconomic equilibrium in the short run and long run
money demand curve, quantity of money, and interest rates
money market equilibrium
monetary policy (expansionary and contractionary)
fiscal policy (expansionary and contractionary)
tax multiplier and government purchases
crowding out
economic effect of tax reform
Phillips curve (long run or short run, or effect of a supply shock)