What was the tangle of alliances in ww1?

In World War I, the major powers were divided into two main alliance systems: the Allies and the Central Powers. The Allies primarily included France, Russia, and the United Kingdom, later joined by Italy and the United States. The Central Powers consisted mainly of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria. These alliances were initially formed for mutual defense and political support, but they quickly escalated the conflict following the assassination of Archduke Franz Ferdinand, leading to a widespread and devastating war.