The nation of Baldia's demand and supply curve for corn is: D = 1000 - 200P and S = -200 + 200P. Its trading partner Frankia has a demand and supply curve given by: D= 1000 - 200P and S'= 200 + 200P. ~ (a) Derive Baldia's import demand curve (MD) and find the equilibrium price and quantity of corn in the absence of trade? (b) Derive Frankia's export supply curve (XS) and find the price and quantity of corn in autarky? ~ (c) Now, find the equilibrium under free trade. What is the world price? What is the volume of trade? ~ (d) Baldia imposes a specific tariff of $0.5 on corn imports. What is the after- tariff world price and volume of trade? (e) Finally, by imposing the import tariff, has Baldia improved or reduced its net welfare? Draw graph(s) to illustrate and make sure to show your work ~