Charlemagne, also known as Charles the Great, was an early medieval king of the Franks who ruled from 768 to 814 CE. He was born in 742 CE and inherited the Frankish throne from his father, Pepin the Short. Charlemagne expanded the Frankish Empire through military conquests and political alliances, becoming the first ruler of a united Western Europe since the collapse of the Roman Empire. He was a patron of the arts and education, and his reign saw a cultural and intellectual revival known as the Carolingian Renaissance. Charlemagne was crowned Holy Roman Emperor in 800 CE by Pope Leo III, which cemented his status as a significant historical figure. His legacy has had a lasting impact on European history and culture.