How did Charlemagne improve European society? O He expanded government, which grew trade.
O He changed the law, which gave serfs freedom.
O He expanded the church, which improved education.
O He returned land to people, which helped them build cities.

Explanation:

Charlemagne has made many impacts on european society, for example... charlemagne expanded the reform program of the church that also strengthend(sorry if I spelled that wrong) the church's power structure and advancing the skill and moral quality of the clergy. Through these conquests Charlemagne united Europe and helped spread christianity worldwide. ( I came across this question at the same time I was reading about charlemagne in my textbook)

the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.