Charlemagne was important in medieval europe because

he established a relatively unified empire in medieval Europe.

Explanation:

a. competition between france and england for land and power

the best description of postwar writers might be progressive.

following the war, writers showed a tendency to work on artistic or social matters rather than political themes. while postwar literature may not have been the greatest period of english literature, the themes provided excellent critics a high number of novels. such examples include anthony burgess, anthony powell and frank kermode, all of which can be placed under the progressive view.