 Zwentibold was hated by his subjects, so Charles the Simple decided to invade in 898 after being called by Count Reginar of Hainaut.After seizing Aachen and capturing Charlemagne's Palace at Nijmegen, he returned to France at the request of the German bishops.A few years later, in September 911, the Lotharingian aristocracy again called on Charles the Simple after the death of Louis the Child, the last Carolingian ruler in East Francia.