Kartenspiel, oder Kommentar zu den Meditationen des Herrn Descartes. Sweden's extensive waterway availability throughout the south was exploited with the building of the Göta Canal in the 19th century, shortening the potential distance between the Baltic Sea south of Norrköping and Gothenburg by using the lake and river network to facilitate the canal. 208 In 2009, the decisions to construct Sweden's two largest scientific installations, the synchrotron radiation facility MAX IV and the European Spallation Source, were taken. Descartes, Rene "Meditations on First Philosophy, 3rd., Translated from Latin by: Donald. "The Head of State". All those interviewed placed great emphasis on the social identification through singing and also referred to the importance of Swedish folk song in the maintenance of the choral singing tradition and national identity.