How did it emerge? What are some defining characteristics of a Fascist state, or political party, or movement? How does it differ from other authoritarian governments?
This question has been thoroughly discussed here https://www.reddit.com/r/AskHistorians/comments/5rloof/what_is_fascism_what_beliefs_does_it_entail/?st=IYP3O2TO&sh=c2ca4f6a (not to discouraged further comments)