What did the great powers form by 1907?

By 1907, the great powers of Europe had formed two major alliances: the Triple Alliance and the Triple Entente. The Triple Alliance consisted of Germany, Austria-Hungary, and Italy, while the Triple Entente included France, Russia, and Britain. These alliances were established as a means of mutual defense and to maintain a balance of power, but they also heightened tensions and rivalries among the nations, setting the stage for World War I.