sentences:  The 24 Hours of Le Mans remained a remnant, still competed by a large number of sportscars, but mostly on a single race basis.Various sportscar leagues had sprung up since the WSC's demise, including the International Motor Sports Association's replacement for their Camel GTP series, the Prototype SportsCar Racing series.In Europe, two series were also developed, the FIA Sportscar Championship and the FIA GT Championship, although they were not combined like IMSA's series.