Original sentence: Friedrich Hayek and Milton Friedman,, in response to social liberalism and Keynesianism, argued that government involvement in the economy should be as small as possible in order to allow the exercise of individual freedom.This was described as a return to the ideas of classical liberalism or neo-classical liberalism
Edited sentence: In the 20th century, Friedrich Hayek and Milton Friedman, in response to social liberalism and Keynesianism, argued that government should be as small as possible in order to allow the exercise of individual freedom.This return to the ideas of classical liberalism was called neo-classical liberalism