In the YouTube documentary entitled, "Commanding Heights - The Agony of Change," what did Milton Friedman and his Chicago Boys prove in the South American nation of Chile during the late 1970s, 1980s, and 1990s? Multiple Choice That a military dictatorship, like the one Chile had during the 1970s, was necessary to control the economy and to improve the economic situation. That the Milton Friedman theory of MS = GDP was the only economic policy that a developing nation needed in order to ensure a bright economic future. That when you get rid of socialist state control over the economy and allow the free market and competitive market forces to work, then the nation will produce a better economy, a higher standard of living, and it might eventually lead to a free society whereby democracy will flourish. That the Keynesian theory of massive government spending was correct. Developing nations must use this approach to ensure their odds of economic success