Economy plays a vital role in our society. From the prices of commodities and services to the normal functioning of a household and a country, it is the economy that controls our life and living predominantly as an external force. Though there have been greatest of economists who contributed comprehensively through their research, analysis and documentation, 20th century saw a surge in the number greatly. British economist, William Arthur Lewis was the first to explore the problems of the developing world in the post-war era through his theory of economic growth. US economist, James Buchanan was one of the famed and celebrated economists of the century who is best remembered as the founder of ‘public choice theory’. And while talking of greatest economists of the 20th century, US economist, Milton Friedman definitely deserves top mention. He was best known for his advocacy of monetarism, the control of aggregate demand solely by control of the money supply and his unflinching support of the market in virtually all areas of economic life. US economist, Kenneth Arrow developed the first rigorous proof of the existence of general equilibrium in a capitalist economy. And there are many others including, Irving Fisher, John Richard Hicks, Amartya Sen, Douglass North, Robert Merton, and so on. Discover some amazing life facts and career graph of the famous economists of the 20th century.