Plenty of facts are available to us to understand the history of Europe from the 14th century. They include documents, printed books, artworks, sculptures, buildings, and clothes. In Europe and America, they have been carefully preserved. The first person who taught people the importance of preserving historical evidences was Leopold von Ranke, the famous German historian. He said that the most important responsibility of a historian is writing about nations and their politics and to do that a historian must make use of different documents and les in the various government departments.
