In Italy, the radical new form of government called Fascism was

primarily fueled by what factor?

The main cause of fascism's drive-in Italy was that its government and democracy had failed in the First World War peace negotiations.

Explanation:

Fascism was a violent armed party and group imposed under the ideals of Benito Mussolini in 1919, immediately after the First World War.

The main cause for the creation of this party was the loss by the Italian government in the peace negotiations at the end of the first war.

Since Italy had been one of the winning countries and where it had not received any compensation or reward from the other countries.

When the war came to an end, thousands of German and Italian soldiers were demobilized and are left without direction.

These soldiers found in the fascist movement an ideology that understands their frustration and protects them, which led them to support this party.