Part IDescribe John Maynard Keynes contribution to the theories of Macroeconomic

Part IDescribe John Maynard Keynes contribution to the theories of Macroeconomics. Why was he such an important economist? Discuss the theories of two other 20th century economists who made a significant contribution to the study of economics.Part IIAssume that Country A has a population of 500000 and only produces one good: cars. Country A produces 100000 cars per year. The people in Country A purchase 90000 cars but there are not enough cars to fulfill all the demand. They decide to import 50000 more. The government buys 25000 cars for its police force and 10000 cars are bought by companies to transport employees to other locations to work. They also export 65000 cars to nearby countries for sale.Part IIIGo to the Bureau of Economic Analysis on the Department of Commerces Web site and look up the latest new release for real GDP.