The Second Schleswig War set the stage for the subsequent wars of German Unification (the Austro-Prussian War and the Franco-Prussian War) which did not result in interventions by any other Great Powers and which resulted in significant changes to the map of Europe. These wars, and the wars of Italian Unification were concluded among the participants without the approval of non-participant powers in Congresses or Conferences to maintain the balance of power. While various multilateral conferences took place during this period - most notably, the London Conference of 1867 which forestalled war over the Luxembourg Crisis - the cooperative nature of the Concert and its focus on stability was significantly diminished during this time of conflict.