Which alliance was defeated in World War I?

The alliance of Germany and Austria-Hungary was a central component of the Central Powers during World War I, which ultimately faced defeat. This alliance was characterized by its militaristic and expansionist ambitions, which were significant factors leading to the outbreak of the war. Germany and Austria-Hungary, along with their allies, sought to challenge the prevailing powers in Europe, particularly the Triple Entente, which included France, Great Britain, and Russia.

Throughout the war, the Central Powers engaged in numerous battles but ultimately were overwhelmed by the military and economic resources of the opposing allies. The conclusion of the war was marked by the signing of the Treaty of Versailles in 1919, which held the Central Powers, particularly Germany, accountable for instigating the conflict and imposed severe reparations and territorial losses on them. This context highlights why the alliance of Germany and Austria-Hungary is identified as defeated in World War I.