World War I officially concluded on November 11, 1918, with the signing of the Armistice. This agreement marked the cessation of hostilities on the Western Front and set the stage for the Treaty of Versailles, which was signed on June 28, 1919. The war had far-reaching consequences, reshaping national boundaries, altering economies, and bringing about significant political changes across Europe and beyond. The end of the conflict also laid the groundwork for World War II due to unresolved tensions and the punitive measures imposed by the Treaty of Versailles on Germany.