Pepin was sincerely grateful for this kindness on the part of the church. He made two expeditions to Italy to defend the Pope against his enemies. He took Ravenna and several other cities away from the Longobards and presented them to His Holiness, who incorporated these new domains into the so-called Papal State, which remained an independent country until half a century ago.
After Pepin's death, the relations between Rome and Aix-la-Chapelle or Nymwegen or Ingelheim, (the Frankish Kings did not have one official residence, but travelled from place to place with all their ministers and court officers,) became more and more cordial. Finally the Pope and the King took a step which was to influence the history of Europe in a most profound way.
Charles, commonly known as Carolus Magnus or Charlemagne, succeeded Pepin in the year 768. He had conquered the land of the Saxons in eastern Germany and had built towns and monasteries all over the greater part of northern Europe. At the request of certain enemies of Abd-ar-Rahman, he had invaded Spain to fight the Moors. But in the Pyrenees he had been attacked by the wild Basques and had been forced to retire. It was upon this occasion that Roland, the great Margrave of Brittany, showed what a Frankish chieftain of those early days meant when he promised to be faithful to his King, and gave his life and that of his trusted followers to safeguard the retreat of the royal army.
During the last ten years of the eighth century, however, Charles was obliged to devote himself exclusively to affairs of the South. The Pope, Leo III, had been attacked by a band of Roman rowdies and had been left for dead in the street. Some kind people had bandaged his wounds and had helped him to escape to the camp of Charles, where he asked for help. An army of Franks soon restored quiet and carried Leo back to the Lateran Palace which ever since the days of Constantine, had been the home of the Pope. That was in December of the year 799. On Christmas day of the next year, Charlemagne, who was staying in Rome, attended the service in the ancient church of St. Peter. When he arose from prayer, the Pope placed a crown upon his head, called him Emperor of the Romans and hailed him once more with the title of "Augustus" which had not been heard for hundreds of years.