Completar frases CHARLEMAGNEVersión en línea A brief biography of Charlemagne. por Alfonso Poza 1 converting crowned emperor reforms Moors succeeded Frankish Pope divided Christianity library Italy Carolingian brother kingdom western Charlemagne was born in the late 740s , the son of the king Pepin the Short . When Pepin died in 768 , his kingdom was between his two sons and for three years Charlemagne ruled with his younger Carloman . When Carloman died suddenly in 771 , Charlemagne became sole ruler . Charlemagne spent the early part of his reign on several military campaigns to expand his . In 772 he invaded and conquered Saxony , them to Christianity . He also extended his kingdom to the south , conquering the kingdom of the Lombards in northern . In 778 , he invaded northern Spain , then controlled by the and established the Spanish March . Between 780 and 800 , Charlemagne added Bohemia to his empire and subdued the Avars in the middle Danube . In 800 a rebellion against Leo III began . Charlemagne went to his aid in Rome and defeated the rebellion . Then Pope Charlemagne on Christmas Day that year , declaring him of the Romans . Although this did not give Charlemagne any new powers , it revive the imperial tradition of the Roman emperor . The immense territories which Charlemagne controlled became known as the empire . Charlemagne introduced administrative , standardised weights , measures and customs dues , which helped improve commerce and initiated important legal reforms . He also attempted to consolidate throughout his vast empire . He persuaded many eminent scholars to come to his court and established a new of Christian and classical works . Charlemagne died in 814 and was by his son Louis the Pious .