CIAM(Congres Internationaux d'Architecture Moderne) propagated their modern way of architecture which ought to have possessed the spirit of Renaissance. The spirit has its origin in the ancient Roman tradition, the driving force at the core of the modern European society. In modern architecture the kind of change which CIAM aimed at with the Roman spirit was brought about by the social movements that took place amid the upheaval of the early 20th century Europe. The change, however, went against the spirit in the way CIAM defined it. Certain factors wedged into the ideal that CIAM had set and brought it under the influence of the other spirit that formed the modern Europe, the spirit diametrically opposite to the Roman spirit, the Germanic spirit. It was fostered by the Religious Reformation in the 15th century. That the Roman spirit was in consequence displaced by the Germanic spirit was the part and parcel of the cause for which CIAM broke down.