Europe system, several major empires took control of European politics. Among these were the Russian Empire, the restored French monarchy, the German Confederation, under the dominance of Prussia, the Austrian Empire, and the Ottoman Empire. The conservative forces held sway until the Revolutions of 1848 swept across Europe and threatened the old order. Numerous movements developed around various cultural groups, who began to develop a sense of national identity. While initially, all of these revolutions failed, and reactionary forces would re-establish political control, the revolutions marked the start of the steady progress towards the end of the Concert of Europe under the dominance of a few multi-national empires and led to the establishment of the modern nation state in Europe; a process that would not be complete for over a century and a half. Central and Eastern Europe's political situation was partly shaped by the two World Wars, while many national identities in these two regions formed modern nation states when the collapse of the Soviet Union and the multinational states Yugoslavia and Czechoslovakia led to numerous new states forming during the last decade of the 20th century. Folk culture Romantic nationalism inspired the collection of folklore by such people as the Brothers Grimm. The view that fairy tales, unless contaminated from outside literary sources, were preserved in the same form over thousands of years, was not exclusive to Romantic Nationalists, but it fit in well with their views that such tales expressed the primordial nature of a people. The Brothers Grimm were criticized because their first edition was insufficiently German, and they followed the advice. They rejected many tales they collected because of their similarity to tales by Charles Perrault, which they thought proved they were not truly German tales; Sleeping Beauty survived in their collection because the tale of Brynhildr convinced them that the figure of the sleeping princess was authentically German. They also altered the language used, changing each "Fee" (fairy) to an enchantress or wise woman, every "prince" to a "king's son", every "princess" to a "king's daughter". Discussing these views in their third editions, they particularly singled out Giambattista Basile's Pentamerone as the first national collection of fairy tales, and as capturing the Neapolitan voice. The work of the Brothers Grimm influenced other collectors, both inspiring them to collect tales and leading them to similarly believe that the fairy tales of a country were particularly