How did WW1 end why?

World War I ended with the signing of the Armistice on November 11, 1918, which marked a ceasefire between the Allies and Germany. The war concluded due to a combination of military exhaustion, economic strain, and social unrest within the Central Powers, particularly Germany. The Allies' successful military campaigns in 1918, including the Hundred Days Offensive, effectively broke the German lines, leading to their surrender. Subsequently, the Treaty of Versailles was signed in 1919, formalizing the end of the war and imposing significant reparations and territorial losses on Germany.