History of the French Communist Party

The French Communist Party (French: Parti Communiste Français; abbreviated PCF) has been a part of the political scene in France since 1920, peaking in strength around the end of World War II. It originated when a majority of members resigned from the socialist French Section of the Workers' International (SFIO) party to set up the French Section of the Communist International (SFIC). The SFIO had been divided over support for French participation in World War I and over whether to join the Communist International (Comintern).

Source: Wikipedia — History of the French Communist Party (CC BY-SA 4.0)