Recently released in paperback, the well researched book explains the history you should know.
As Dr. Pournelle pointed out:
Goldberg’s book is an anomaly: serious students of political science shouldn’t find anything here they didn’t already know. Alas, I had to say “shouldn’t”, because a very great number of people who consider themselves serious students of political science will be shocked and astonished to discover that Fascism, Progressivism, and modern American Liberalism have many intellectual roots in common. Roosevelt’s New Deal incorporated many elements of Italian Fascism, and in fact before the mid-30’s many Western statesmen had admiring things to say about Fascism and about Il Duce Mussolini who made the trains run on time and brought prosperity — or its illusion — to Italy. Goldberg documents all this as well as the Jacobin roots of both Fascism and Progressivism. The notion that human life can be improved by central planning and tinkering with the legal and economic system is the common thread to them all.