Why did the call for the First Crusade sound not in Rome and Constantinople, but in Clermont-Ferrand?

Clermont-Ferrand (in the south of France) was part of the possession of Count Raymond of Toulouse, who had promised the Pope in advance that he would go on a campaign and persuade other feudal lords to do the same.

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.