In which year did the first French Grand Prix take place?

The French Grand Prix (1906–1967: Grand Prix de l'ACF, 1968–2008: Grand Prix de France) was a race held as part of Fédération Internationale de l'Automobile's annual Formula One automobile racing championships. It was one of the oldest motor races in the world. It ceased shortly after its centenary in 2008 with 86 races having been held, a victim of finances and unfavourable venues.