How was the failure of Ludendorff's offensive responsible for Allied victory?

The failure of Ludendorff's offensive in the spring of 1918 marked a turning point in World War I, as it depleted German resources and morale. The Allies, having successfully repelled the offensive, were able to regroup and launch their own counteroffensives, leveraging superior coordination and fresh American troops. This shift in momentum undermined German confidence and led to a series of Allied victories. Ultimately, the failure of the offensive contributed significantly to Germany's eventual surrender in November 1918.