Final answer:
During the Harding and Coolidge administrations, U.S. foreign policy was characterized by isolationism and a focus on international cooperation to achieve peace, including efforts to reduce armaments. This approach continued with a few strategic shifts under Hoover, including improved relations with Latin America.
Step-by-step explanation:
The U.S. approach to foreign policy during the Harding and Coolidge years primarily favored isolationism, a reluctance to engage in European affairs, and a focus on peace through international cooperation and reduction of armaments. During Harding's term, despite the lack of U.S. ratification of the Treaty of Versailles, efforts were made to broker peace with Germany and Austria and to convene a major conference in Washington aiming at armament reduction. Successor Calvin Coolidge continued this policy trend. Herbert Hoover, although beginning his presidency with similar policies, eventually helped usher in more positive relations with Latin American countries, setting the stage for the Good Neighbor policy of Franklin Roosevelt. Hoover's approach marked a strategic shift from the previous Roosevelt Corollary, emphasizing the Monroe Doctrine and opposition to territorial acquisitions by force, such as through the Hoover-Stimson Doctrine.