The event known as the "Great War" refers to World War I, which lasted from 1914 to 1918. This global conflict involved many of the world's great powers, divided into two main alliances: the Allies and the Central Powers. Marked by trench warfare and the use of advanced technology, World War I resulted in unprecedented destruction and loss of life. The war was triggered by the assassination of Archduke Franz Ferdinand of Austria and was characterized by battles such as the Somme and Verdun. The conflict ultimately led to significant geopolitical changes, including the Treaty of Versailles and the eventual rise of World War II.