In 771, with the death of his brother, Charlemagne became sole ruler of the Frankish kingdom and began to expand its borders. Responding to an appeal by [[Pope Adrian I]], Charlemagne waged a successful campaign against the [[Lombardy]] in 773 to 774. He went on to annex Bavaria in 788 and Saxons and the Avars along the Danube river were subjugated after a conflict with the Franks that lasted for 30 years. They went on to accept Christianity. | In 771, with the death of his brother, Charlemagne became sole ruler of the Frankish kingdom and began to expand its borders. Responding to an appeal by [[Pope Adrian I]], Charlemagne waged a successful campaign against the [[Lombardy]] in 773 to 774. He went on to annex Bavaria in 788 and Saxons and the Avars along the Danube river were subjugated after a conflict with the Franks that lasted for 30 years. They went on to accept Christianity. |