World War I: Causes, Course, and Consequences

World War I, also known as the Great War, erupted in 1914 and lasted until 1918, engulfing Europe and beyond in a conflict of unprecedented scale and devastation. The complex web of alliances, imperial rivalries, and nationalist aspirations formed the underlying causes of the war. The assassination of Archduke Franz Ferdinand of Austria-Hungary served as the immediate trigger, setting off a chain reaction that drew major powers into the conflict.

The course of World War I was marked by trench warfare, new military technologies, and staggering human losses. Key battles such as the Somme, Verdun, and Gallipoli resulted in millions of casualties and reshaped the geopolitical landscape. The entry of the United States into the war in 1917 proved to be a turning point, bolstering the Allied forces and hastening the defeat of the Central Powers.