In the eighth century, Charlemagne built an empire that covered, among other places, parts of modern day France, Italy and which of these countries?

Charlemagne's empire (the Carolingian Empire) at its peak in the early 9th century covered much of Western and Central Europe, including modern-day France, northern Italy, Germany, Belgium, Netherlands, and parts of Austria and Spain. Germany was a core part of his realm, as he was crowned 'Emperor of the Romans' in 800. Norway, Spain (except northern marches), and England were not part of his empire.