Charlemagne and his family are responsible for a Christian Europe because his grandfather is Charles Martel who defended Europe from the moors and his family is related to Clovis Frank who put the Franks on the map and converted them to Christian.
Charlemagne’s kingdom became the Holy Roman Empire when on Christmas Day, in 800 CE, when Pope Leo lll placed a crown on Charlemagne’s head and proclaimed him "Augustus," emperor of the "Holy Roman Empire," after, in 799, Charlemagne’s armies rescued Pope Leo lll from an attack, so to repay Charlemagne for the assistance he crowned Charlemagne emperor of the "Holy Roman Empire."
Charles was given the name “GREAT” because he standardized weights and measures, minted a silver coin to be used throughout the empire, and standardized tolls and customs fees. He had laws organized and made some laws into statutes for the empire. And he urged better methods of farming, promoted education, and spread Christianity.
The changes Charlemagne made to the legal system were an improvement over the old one because the old one was trial by ordeal and was not
For him to be a successful king Charlemagne thought people needed to read and write because if he sent his officials a note, giving them some instruction, he wanted to make sure they could read it.
Charlemagne’s order for his scholars to copy all the old manuscripts into Latin by hand was important because it preserved much of the knowledge from the time.