It was a split among three new peoples: the French, Germans and Burgundians. These peoples chose different descendants of Charlemagne as their leaders and began to build their states separately. Then the leaders did what most of the warriors wanted. Feudalism began to develop later, in the 10th century, when the warriors turned into landowners and became unequal in their rights.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.