At the end of World War I, which of these caused the greatest damage to President Wilson’s legacy?

Wilson made the League of Nations a central goal of the peace settlement, but the Senate rejected the Treaty of Versailles, so the United States never joined the League. That failure undermined Wilson’s vision for postwar peace and is generally considered the greatest damage to his legacy among these choices. His illness limited his public appearances, but it was the defeat of his central foreign-policy goal that had the larger impact.

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