 Complete the following phrase:  The fall of the second phase of the Concert of Europe can be attributed largely to the rival alliance systems  the Triple Alliance Germany, Austria-Hungary, and Italy and the Triple Entente France, Russia, and the United Kingdom  which formed a rift in the European States. These rival alliances threatened the underlying nature of the Concert, which relied on ad hoc alliances to respond to a given situation. Later conferences including the Algeciras Conference of 1906 defusing the 