What do I need to live in paris france?

The new rulers' power reached its fullest extent under Pippin's son Charlemagne, who in 771 reunited the Frankish domains after a further period of division, subsequently conquering the Lombards under Desiderius in what is now northern Italy (774), incorporating Bavaria (788) into his realm, defeating the Avars of the Danubian plain (796), advancing the frontier with Islamic Spain as far south as Barcelona (801), and subjugating Lower Saxony (804) after prolonged campaigning.