Early Middle Ages: The early Middle Ages saw a resurgence in a hierarchical class system with the rise of feudalism, which made the vassals and lord richer, and the peasants poorer by making them work land they didn't own and barely paying them anything
Charlemagne built an empire and helped to restore church-based education. He also revived traditions of Roman imperial government. In this video Charlemagne's life is discussed in depth, such as how he declared war on the Lombard Kingdom.
Literacy spread, revitalized popular culture, and stimulated religious life. Cathedral schools developed into universities by the century. Students would study medicine and law. This video describes the universities in medieval Europe in depth.