Q: Charlemagne (/ rlmen /) or Charles the Great (2 April 742 -- 28 January 814), numbered Charles I, was King of the Franks from 768, King of the Lombards from 774 and Emperor of the Romans from 800. He united much of Europe during the early Middle Ages. He was the first recognised emperor in western Europe since the fall of the Western Roman Empire three centuries earlier. The expanded Frankish state that Charlemagne founded is called the Carolingian Empire.

Answer this question: who built a european empire and was crowned emperor of the romans in 800?
A: Charlemagne
Explain how we arrive at this answer:
Explanation: The important part for answering this question is: Charlemagne (/ rlmen /) or Charles the Great (2 April 742 -- 28 January 814), numbered Charles I, was King of the Franks from 768, King of the Lombards from 774 and Emperor of the Romans from 800.