Final answer:
Charlemagne influenced and unified Europe through his conquests, reorganization of government, revival of learning, and reform of the Church. His alliance with the papacy and his coronation as the Holy Roman Emperor also strengthened his position and expanded his territory.
Step-by-step explanation:
Charlemagne, also known as Charles the Great, played a significant role in influencing and unifying Europe during the Early Middle Ages. His conquests and empire-building efforts resulted in the unification of Western Europe for the first time since the collapse of the Roman Empire. Charlemagne's vast empire extended from modern France to Germany, northern Italy, and parts of Spain and central Europe.
Charlemagne's influence on Europe can be seen in his reorganization of government, his attempts to revive learning, and his reform of the Church. He sponsored the education of priests, created libraries, and promoted the study of ancient writings and proper Latin. This period of cultural and intellectual revival, known as the Carolingian Renaissance, had a lasting impact on Europe.