Answer:
It was important because after the Fall of Western Roman Empire whole Western Europe was in chaos, constant wars and turbulences. Period of his reign finally brought stability and even development of economy and even knowledge. It didn't lasted for a long period of time, but it was a step forward in contrast to period of 300 years.
Explanation:
During his reign Charlemagne ruled the country that included todays France, parts of Germany, Austria, Benelux, Italy and created one of the largest empire in medieval Europe. Besides being a great conqueror he organized his country, stabilized economy, built many roads and building and upgraded the status of education.
