Desired demand is DD = C +Ip +G+NX, where consumption C = a+b(Y −T), Ip is planned investment, G government consumption and T net taxes. Y denotes domestic output. Net exports are NX = cY f − dY , where Y f is foreign output (output of export countries). Parameters a, b, c, and d are all strictly positive and b > d. In equilibrium, Y = DD. By how many units (e.g. billions of euros) does domestic equilibrium output increase if go- vernment consumption is increased by 1 one unit? (Hint: solve for equilibrium Y as a function of G.) How and why does international trade affect the fiscal multiplier?

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