The FIA GT3 European Championship was a sports car racing series organized by the Stéphane Ratel Organisation (SRO) and regulated by the Fédération Internationale de l'Automobile (FIA).
 It was a championship derived from the international FIA GT1 World Championship, but meant to provide competition for more amateur racers in closer to production cars.
 The series used extensive performance balancing and handicap weights to make cars more equal.
The FIA GT1 World Championship was a world championship sports car racing series developed by the SRO Group and regulated by the Fédération Internationale de l'Automobile (FIA), held from 2010 to 2012.
 It featured multiple grand tourer race cars based on production road cars and conforming with the GT1 (2010–2011) and GT3 (2012) regulations competing in one-hour races on multiple continents.
 All cars were performance balanced with weight and restrictor adjustments to artificially equalise their performance.
 Championships were awarded each season for drivers and teams.
The Blancpain GT Series Endurance Cup, formerly the Blancpain Endurance Series from 2011 to 2015, is a sports car racing series developed by the SRO Group and the Royal Automobile Club of Belgium (RACB) with approval from the Fédération Internationale de l'Automobile (FIA).
 It features grand tourer racing cars modified from production road cars complying with the FIA's GT3 regulations.
 The series's goal is to be an endurance racing championship for GT3 cars, similar to the European Le Mans Series which uses GTE cars and Le Mans Prototypes.
 The series is primarily sponsored by Swiss watchmaker Blancpain, and the company's Lamborghini Super Trofeo series serves as support races.
The Blancpain GT Series is a sports car racing series organized by the Stéphane Ratel Organisation (SRO) with the approval of the Fédération Internationale de l'Automobile (FIA).
 It features grand tourer racing cars modified from production road cars complying with the FIA's GT3 regulations.
 The series is divided into two separate championships, the Blancpain GT Series Sprint Cup and the Blancpain GT Series Endurance Cup.
 Although the Blancpain GT Series Endurance Cup is organised since 2011, the inaugural season of the Blancpain GT Series is 2014, because in that year the FIA GT Series became the Blancpain Sprint Series, which is now the Blancpain GT Series Sprint Cup.
 The series is primarily sponsored by Swiss watchmaker Blancpain.
The 2010 FIA GT1 World Championship season was the debut season of the FIA GT1 World Championship, a motor racing competition reserved for FIA GT1 cars.
 The championship was a replacement for the FIA GT Championship which was held from 1997 to 2009.
 It was the first sports car racing series to be sanctioned by the Fédération Internationale de l'Automobile (FIA) as a World Championship since the demise of the World Sportscar Championship at the end of the 1992 season.
The 2009 FIA GT Zolder 2 Hours is the eighth and final round of the 2009 FIA GT Championship season.
 It took place at Zolder, Belgium on 25 October 2009.
 It was also the final race held under the FIA GT Championship banner before the introduction of the FIA GT1 World Championship and FIA GT2 European Championship in 2010.
The Blancpain GT Series Sprint Cup, formerly the FIA GT Series in 2013 and the Blancpain Sprint Series in 2014 and 2015, is a sports car racing series organized by the Stéphane Ratel Organisation (SRO) with the approval of the Fédération Internationale de l'Automobile (FIA).
 The championship is mostly concentrated in Europe, but will visit other continents including Asia.
 The series continues the sprint format for GT-cars carried out by the defunct FIA GT1 World Championship.
The 2011 FIA GT1 World Championship season was the second season of the SRO Group's FIA GT1 World Championship, an auto racing series for grand tourer cars complying with Fédération Internationale de l'Automobile (FIA) GT1 regulations.
 The championship comprised two titles: GT1 World Champion for Drivers and GT1 World Champion for Teams.
 Five of the six manufacturers represented in the 2010 championship returned for the second season, however Maserati was not represented and 2010 Teams World Champions Vitaphone Racing Team did not defend their title.
Group GT3, known technically as Cup Grand Touring Cars and commonly referred to as simply GT3, is a set of regulations maintained by the Fédération Internationale de l'Automobile (FIA) for grand tourer racing cars designed for use in various auto racing series throughout the world.
 The GT3 category was initially created in 2005 by the SRO Group as a third rung in the ladder of grand touring motorsport, below the Group GT1 and Group GT2 categories which were utilized in the SRO's FIA GT Championship, and launched its own series in 2006, the FIA GT3 European Championship.
 Since then, Group GT3 has expanded to become the de facto category for many national and international grand touring series, although some series modify the ruleset from the FIA standard.
 By 2013, nearly 20 automobile manufacturers have built or been represented with GT3 machines.
The FIA GT Championship was a sports car racing series organized by the Stéphane Ratel Organisation (SRO) at the behest of the Fédération Internationale de l'Automobile (FIA).
 The championship was mostly concentrated in Europe, but throughout the years has visited other continents including Asia and South America.
 At the end of 2009, the championship was replaced by the FIA GT1 World Championship, which morphed into the FIA GT Series for 2013.

Question: The 2009 FIA GT Zolder 2 Hours is the eighth and final round of what world championship sports car racing series developed by the SRO Group and regulated by the Fédération Internationale de l'Automobile (FIA), held from 2010 to 2012?
Answer: FIA GT1 World Championship