John Maynard Keynes is known for his economic theory called Keynesian economics. He studied on ways to resolve the problem of the Great Depression. According to Keynes, the government should abandon or reduce tax rates, and at the same time, increase government spending as investments. By increasing government expenditures, it would open more job opportunities and investments into an economic zone. People will have high earnings, and because of lower taxes, they could buy what they want. For Keynes, this type of economic system called capitalism is the solution for the Great Depression.