Question: 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?

Context paragraphs:
2018 FIA Formula 3 European Championship: The 2018 FIA Formula 3 European Championship is the seventh and final season of the FIA Formula 3 European Championship, a multi-event motor racing championship for third-tier single-seat open wheel formula racing cars that is held across Europe.  The championship features drivers competing in two-litre Formula Three racing cars which conform to the technical regulations, or formula, for the championship.  The series is scheduled to merge with the GP3 Series in 2019.

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).

2015 FIA Formula 3 European Championship: The 2015 FIA Formula 3 European Championship was a multi-event motor racing championship for single-seat open wheel formula racing cars that was held across Europe.  The championship featured drivers competing in two-litre Formula Three racing cars which conform to the technical regulations, or formula, for the championship.  It was the fourth edition of the FIA Formula 3 European Championship .

2017 FIA Formula 3 European Championship: The 2017 FIA Formula 3 European Championship is the current season of a multi-event motor racing championship for third-tier single-seat open wheel formula racing cars that is held across Europe.  The championship features drivers competing in two-litre Formula Three racing cars which conform to the technical regulations, or formula, for the championship.  It is the sixth edition of the FIA Formula 3 European Championship.  For the first time ever all entrants utilize the all-new Dallara F317.

2014 FIA Formula 3 European Championship: The 2014 FIA Formula 3 European Championship was a multi-event motor racing championship for single-seat open wheel formula racing cars that held across Europe.  The championship featured drivers competing in two-litre Formula Three racing cars built by Italian constructor Dallara which conformed to the technical regulations, or formula, for the championship.  It was the third edition of the FIA Formula 3 European Championship.  Raffaele Marciello was the reigning drivers' champion, but he did not defend his title as he stepped up to the GP2 Series.  His team, Prema Powerteam represented in the Teams' championship by Esteban Ocon and Antonio Fuoco, defended their Teams' title.

2017 World Series Formula V8 3.5: The 2017 World Series Formula V8 3.5 is a multi-event motor racing championship for open wheel, formula racing cars held across Europe.  The championship features drivers competing in World Series Formula 3.5 V8 formula race cars that conform to the technical regulations for the championship.  The 2017 will become the first season as feeder series to FIA World Endurance Championship.  The season will also mark the return of the name "World Series" after one season, as the FIA accepted the request from promoter RPM Racing.  The name "World Series" was retrieved from the championship after Renault Sport withdraw its support and the Formula Renault 3.5 became Formula V8 3.5 for the 2016 season.

2013 FIA Formula 3 European Championship: The FIA Formula 3 European Championship was a multi-event motor racing championship for open wheel, formula racing cars held across Europe.  The championship featured drivers competing in 2 litre Formula Three Dallara single seat race cars that conform to the technical regulations for the championship.  The 2013 season was the second edition of the FIA Formula 3 European Championship organized by the FIA.  The season began at Autodromo Nazionale Monza on 23 March and finished on 20 October at Hockenheimring.  The series formed part of the Deutsche Tourenwagen Masters meetings at seven triple header events, with other triple header events as part of the World Touring Car Championship, the FIA World Endurance Championship and the Superstars Series.

2016 FIA Formula 3 European Championship: The 2016 FIA Formula 3 European Championship was a multi-event motor racing championship for single-seat open wheel formula racing cars that is held across Europe.  The championship features drivers competing in two-litre Formula Three racing cars which conform to the technical regulations, or formula, for the championship.  It is the fifth edition of the FIA Formula 3 European Championship.

2000 German Formula Three Championship: The 2000 German Formula Three Championship (German: "2000 Deutsche Formel-3-Meisterschaft" ) was a multi-event motor racing championship for single-seat open wheel formula racing cars that held across Europe.  The championship featured drivers competing in two-litre Formula Three racing cars built by Dallara and Martini which conform to the technical regulations, or formula, for the championship.  It commenced on 22 April at Zolder and ended at Hockenheim on 29 October after ten double-header rounds.

2011 European Truck Racing Championship: The 2011 FIA European Truck Racing Championship was a multi-event motor racing championship for production based trucks held across Europe.  The championship features a mix of professional motor racing teams and privately funded amateur drivers competing in highly modified versions of two-axle tractor units which conform to the technical regulations for the championship.  It was the 27th European Truck Racing Championship season and began at Donington Park on April 22, with the finale at Le Mans on October 9 after ten events.  The championship was won by Jochen Hahn, taking his first title.

Supporting paragraphs: 2000 German Formula Three Championship Formula racing
Answer: regulations