Due to persistent stagflation in the 1970's, he led the attack on the controversial  Phillip's curve, which was a tool often used to promote Keynesian economics.  
Due to persistent stagflation in the 1970's, he led the attack on the controversial  Phillip's curve, which was a tool often used to promote Keynesian economics.  While teaching economics at the University of Chicago, he published the essay "The  Methodology of Positive Economics" . In A Monetary History of the United States,  he argued that government intervention and federal banking caused the Great  Depression. That book established him as the leading proponent of monetarism.  FTP name this American economist, one of the leading advocates of laissez- faire  economies and author of Capitalism and Freedom.
Due to persistent stagflation in the 1970's, he led the attack on the controversial  Phillip's curve, which was a tool often used to promote Keynesian economics.  
Milton Friedman