Which best describes charlemagne's work in europe? a) his hanseatic league was a major force for centuries b) he failed in his attempt to expand his empire c) it was mostly undone after his deathd) he united europe permanently

D) he united Europe permanently

Explanation:

Charlemagne in Literature has been referred to as the "Father of Europe" due to the fact that he was able to unite most of Western Europe countries for the very first time since the era of the Roman Empire. Nevertheless, Charlemagne was also able to unite most parts of Europe that had never been under Roman or Frankish rule.