Why did the North become the center of the unification of France, and not the South? How is this connected with the religious life of the then Europe?
The northern French were united with Rome because they accepted the church reform of Gregory VII; therefore they were able to organize a crusade against the southern heretics – the Cathars.
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.