European Grand Prix
The European Grand Prix was created as an honorific title by the AIACR, the FIA's predecessor in the organisation of motor racing events. The first race to receive the title was the Italian Grand Prix, in 1923; the French Grand Prix followed in 1924 and the Belgian Grand Prix in 1925. After a hiatus in 1929, the Belgian race received the title in 1930, becoming the last race to do so before World War II.
Italian Grand Prix
It was the worst accident in motor racing history and would remain so until the 1955 24 Hours of Le Mans. The Italian Grand Prix went on a three-year hiatus (but the alternative non-championship Monza Grand Prix was run in 1929 and 1930) until the 1931 race, held in late May instead of the traditional early September, was won by Giuseppe Campari and Tazio Nuvolari, sharing an Alfa Romeo. The race was something of an endurance race in those days; it took ten hours to complete the race. The great Nuvolari won again in a shortened 1932 race, this time held in early June.