Short answers, pulled from the story.
Benito Mussolini founded the Fascist movement in 1915 in Milan. The movement emerged as a political group of interventionist nationalists who believed World War I was a revolution that erased the line between civilians and combatants. This group transformed the ancient Roman symbol of the fasces into a weapon of political violence.
The March on Rome occurred on the 24th of October 1922 when Benito Mussolini ordered his paramilitary Blackshirts to take control of public buildings and trains. King Victor Emmanuel III appointed Mussolini as Prime Minister of Italy on the 30th of October 1922 to avoid bloodshed. This event marked the seizure of power by the Fascist Party and the beginning of their rule in Italy.
The Fascist regime signed the Lateran Treaty with the Catholic Church in 1929 to gain state sovereignty for the papacy. Within two years the Church renounced fascism in the Encyclical Non Abbiamo Bisogno as a pagan idolatry of the state. By the late 1930s Mussolini became vocal in his anti-clerical rhetoric and viewed the papacy as a malignant tumor in the body of Italy.
Fascist Italy invaded Ethiopia in 1935 resulting in its condemnation by the League of Nations. The invasion led to widespread diplomatic isolation for Italy and escalated demands for territorial claims and influence in world affairs. This action was part of the expansionist and interventionist foreign policy agendas pursued by Mussolini from the 1930s through the 1940s.
Benito Mussolini was captured and executed by Italian communist partisans on the 28th of April 1945. He had been removed as head of government and arrested by King Victor Emmanuel III in 1943 before being rescued by German forces to lead the Italian Social Republic. His death occurred shortly before Adolf Hitler committed suicide on the 30th of April 1945.