Weber continued his investigation into this matter in later works, notably in his studies on bureaucracy and on the classification of legitimate authority into three types – rational-legal, traditional and charismatic – of which the rational-legal (through bureaucracy) is the dominant one in the modern world.[7] In these works Weber described what he saw as society's movement towards rationalisation.[7] Similarly, rationalisation could be seen in the economy, with the development of highly rational and calculating capitalism.[7] Weber also saw rationalisation as one of the main factors setting the European West apart from the rest of the world.[7] Rationalisation relied on deep changes in ethics, religion, psychology and culture; changes that first took place in the Western civilisation:[15]