The achievement for which charlemagne is most remembered was

Charlemagne is most remembered for being crowned roman emperor, and buling the largest empire since rome, unification and crafting and setting the accurate shape of europe, the biuggest long term effect of carolignian reirth is setting up schooling system to which everyone had acces no matetr of social estate or class, it was then wehen eductaion of divided into elementary, middle and higher

The answer would be option a , b, and c.