Charlemagne’s Saxon Wars Events 772–804: Charlemagne invades what is now northwestern Germany, battling the Saxons for more than thirty years and finally crushing their rebellion, incorporating Saxony into the Frankish Empire and the Christian world. King Charlemagne conquers the Lombard Kingdom, and establishes Frankish rule in Pavia, Venetia, Istria, Emilia, Tuscany, and Corsica. Charlemagne visits Rome; he confirms the Donation of Pepin (see 756) while insisting on his own sovereignty. Pope Adrian I grants him the title of patrician. At around this time, Baghdad becomes the largest city in the world, taking the lead from Chang’an, capital of China Saxon Wars: King Charlemagne spends Easter in Nijmegen, and leads a large Frankish army to Paderborn, where a general assembly of Carolingian and Saxon leaders had been summoned. Saxon lands are integrated into the Frankish Kingdom, and divided into missionary parishes