What are the positive and negative consequences of fragmentation?

Feudal fragmentation is a long-term process in which a single state breaks up into parts with the development of isolated regions. This phenomenon is typical for medieval states, which united multinational tribes under their rule and spread powerful governors. The positive phenomena of fragmentation are: the development of internal relations, foreign trade, an increase in the number and variety of traditions. Negative: insecurity, lack of internal trade and communication, high customs fees.