Charlemagne is defined as ( "Charles the Great" ) a.d. 742–814, king of the Franks 768–814; as Charles I, emperor of the Holy Roman Empire 800–814. Personally to me Charlemagne's greatest achievements was conquering so much of Europe. The greatest achievement was probably becoming emperor of the Holy Roman Empire. It was his biggest yet, compared to the King of the Franks or emperor of the Romans. He handled the task with ease due to his eagerness and he helped Europe become successful with such stability, strong army, and his love for education. He had conquered so much of Europe that he had the largest empire since the height of the Roman Empire. To me Charlemagne achieved greatness in many ways.