How did charles martel impact europe during the middle ages?

a- he reunited the franks to fight to fight off muslim invasion.
b- he united eastern and western portions of the roman empire.
c- he encouraged the development of the arts
d- he spread christianity to new lands.

When the novel made its first appearance in the 1700s, why did it appeal to people of all classes? people could identify with the stories of everyday life. people were entertained by reading about the lives of nobles. people preferred stories that were thoughtful, not full of action. people were excited to read about great historical figures.