This multi-event motor racing championship held across Europe and the origin of the term that describes it lies in the nomenclature that was adopted by the FIA for all of its post-World War II single-seater what?
Formula racing Formula racing is any of several forms of open-wheeled single-seater motorsport. The origin of the term lies in the nomenclature that was adopted by the FIA for all of its post-World War II single-seater regulations, or formulae. The best known of these formulae are Formula One, Two, Three and Four. Common usage of "formula racing" encompasses other single-seater series, including the GP2 Series, which replaced Formula 3000 (which had itself been the effective replacement for Formula Two).
1971 World Sportscar Championship The 1971 International Championship for Makes season was the 19th season of FIA World Sportscar Championship motor racing. It was open to Group 6 Sports Prototypes, Group 5 Sportscars, and Group 4 Special GT Cars and was contested over an eleven race series which ran from 10 January to 24 July 1971. Porsche won the championship, and the German manufacturer also won the International Cup for GT Cars.