During the middle ages who was Charlemagne?

Charlemagne (Latin for Charles the Great) was king of much of Europe from 768 until 814. He was one of the greatest of the medieval kings. He conquered much of Western Europe, and created an empire that include nearly all of present day France, Germany, the Netherlands, Belgium and Switzerland, and large parts of Austria and Italy. This was the largest country in Western Europe in the whole of the Middle Ages. He was crowned Emperor of the West, on Christmas Day, 800 AD.

He was a man who wanted to improve his kingdom, and to that end instituted a number of notable changes. One of great importance was seeing to it that the members of the nobility were educated. He had good relations with the Church and protected the pope.