The world looked on expectantly when the war started, because there was a general knowledge of the conditions existing in Europe and the undercurrent was felt by students of international affairs. But that Russia would revolt and the Czar abdicate, as he did in March, 1917, and the iron-ruled country would set up a government of its own--would join the circle of democracies--was not even hinted at. Neither was it intimated that Constantine I, King of Greece, would abdicate in favor of his son, Prince Alexander, as he did in the following June, under pressure, because of his sympathy for Germany. Neither was there a suspicion that the fire started by the flash of a pistol and the bursting of a bomb in Bosnia would spread until sixteen countries were arrayed against Germany and Austria, supported by the Bulgarians and the Turks. And to these must be added the entrance into the conflict of Canada, Australia, New Zealand, possessions of Great Britain, and smaller possessions of other countries. The flames swept over the face of the earth in this fashion: Starting with the movement of Austria against Servia, after the assassination of the Archduke Ferdinand, there lined up as a consequence of the alliances formed between the powers, the countries referred to in preceding chapters. The triple alliance was originally an agreement between Germany, Austria-Hungary and Italy, to strengthen their positions, and the Triple Entente consisted of agreements between France, England and Russia. INVASION OF BELGIUM. Briefly, the invasion of Belgium by Germany, and her ambitions in the southeast, where Russia had what amounted to protectorate relations, drew first France, England and Russia into the strife, and step by step there became involved nation after nation. The steps, marked by the declarations of war, were as follows: On July 28, 1914, Austria declared war on Servia, and on August 1 Germany made the declaration against Russia. Next Germany turned upon France, on the third day of August, and also on Belgium, whereupon, on the following day, Great Britain declared war on Germany; a day later Austria-Hungary issued the mandate against Russia, and two days later, or on August 8, Montenegro declared war on Austria. Austria accepted the challenge, and then Servia took up the cudgel against Germany. France made formal declaration of war on Austria-Hungary and by the end of August Montenegro had declared against Germany; Great Britain on Austria; Japan on Germany; Austria on Japan; Austria on Belgium. Later, or early in November, Russia declared herself against Turkey, as did France and Great Britain.