World War I is often referred to as "The Great War," owing to its unprecedented scale and impact on global history. It began in 1914 and lasted until 1918, involving many of the world's great powers divided into two main alliances: the Allies and the Central Powers. The conflict was marked by trench warfare, significant loss of life, and widespread devastation. The war reshaped international relations and led to the collapse of empires, such as the Ottoman and Austro-Hungarian Empires. Its resolution through the Treaty of Versailles set the stage for future geopolitical tensions, ultimately planting the seeds for World War II.