What were the greatest challengespeople in Europefaced after the death of Charlemagne in 814?

After Charlemagne's death in 814, Europe faced significant challenges, including political fragmentation as his vast empire was divided among his grandsons, leading to instability and conflicts over succession. The lack of a strong central authority also left regions vulnerable to external threats, particularly from Viking, Magyar, and Saracen invasions. Additionally, the weakening of trade networks and economic decline further exacerbated societal issues, contributing to a period of uncertainty and decline known as the Carolingian Renaissance. This environment set the stage for the eventual rise of feudalism as local lords sought to maintain order and protect their territories.