Mussolini came to power after the "March on Rome" in 1922, and was appointed Prime Minister by King Victor Emmanuel. In 1932 Mussolini wrote (with the help of Giovanni Gentile) and entry for the Italian Encyclopedia on the definition of fascism. Mussolini was also the architect of what we know now as "corporatism".
Benito Mussolini:
What is Fascism, 1932
Fascism, the more it considers and observes the future and the development of humanity quite apart from political considerations of the moment, believes neither in the possibility nor the utility of perpetual peace. It thus repudiates the doctrine of Pacifism -- born of a renunciation of the struggle and an act of cowardice in the face of sacrifice. War alone brings up to its highest tension all human energy and puts the stamp of nobility upon the peoples who have courage to meet it. All other trials are substitutes, which never really put men into the position where they have to make the great decision -- the alternative of life or death....
...The Fascist accepts life and loves it, knowing nothing of and despising suicide: he rather conceives of life as duty and struggle and conquest, but above all for others -- those who are at hand and those who are far distant, contemporaries, and those who will come after...
...Fascism [is] the complete opposite of
Original: How to understand the U.S: What is corporatism? what is fascism?