territorial rearrangements(changed political map of world):
*Germany was forced to surrender Alsace-Lorraine to France. she had to surrender the areas of Eupen and Malmedy to Belgium
*Germany was also compelled to hand over to Poland large parts of the industrial area of Silesia
*new states ,such as Romania ,czechoslovakia ,finland and Yugoslavia,were created keeping in view the principles of nationality and nationalism .
*the war ended the autocratic monarchies in Germany,russia and Austria-Hungary.hungary was recognized as a separate state.after the outbreak of the Russian revolution in 1917.