Final answer:
Wilson saw the establishment of an international organization, the League of Nations, as the key to achieving lasting peace, outlined in his Fourteen Points, which included principles like self-determination and collective security.
Step-by-step explanation:
The key to achieving peace, according to Wilson, was the establishment of an international organization to mediate disputes and prevent aggression, as outlined in his Fourteen Points. Specifically, the League of Nations was central to Wilson's vision, as it aimed to provide collective security and maintain worldwide peace. A quotation from Wilson that supports this conclusion is his assertion that the United States entered World War I "to make the world safe for democracy" and his promise of collective security by the League, "affording mutual guarantees of political independence and territorial integrity to great and small states alike." In the context of the principles shared by Churchill and Wilson to bring about "a better world," these would include self-determination of peoples, free trade, open diplomacy, and the idea of collective security to ensure peace.