Crusades at the beginning of the 13th century went on in Spain (against the Moorish Muslims), in the Baltic states (against the Lithuanians, Estonians and Russians), in the Balkans (against the Byzantines and Bulgarians), in the south of France (against the heretics-Cathars). They were led by local Catholic feudal lords and orders of knights, having received formal permission from Rome.
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.