What good things and bad things did Charlemagne do?

Charlemagne, also known as Charles the Great, is credited with uniting much of Western Europe during the early Middle Ages, fostering a revival of art, culture, and learning known as the Carolingian Renaissance. He implemented administrative reforms and promoted education, which helped lay the foundation for modern European states. However, his conquests often involved violent campaigns and forced conversions to Christianity, leading to significant loss of life and cultural disruption among the conquered peoples. Additionally, his aggressive expansionism sometimes sowed the seeds of future conflicts in Europe.