Give two examples of americas unilateralist foreign policy in the 1920s key

The Senate's repudiation of the Treaty of Versailles following World War I is often seen as ushering in a period of isolationism in American foreign policy. It was impossible for the United States to withdraw completely from world affairs, however, because American possessions stretched from the Caribbean to the Pacific and because the First World War had transformed the country into the world's leading creditor nation. As the threat of war grew in the 1930s — with the rise of the Nazis in Germany and Japanese aggression in China — Congress tried to insulate the United States from potential hostilities through neutrality legislation. While public sentiment remained strongly in favor of staying out of a European conflict, isolationism became increasingly difficult after war broke out in Europe in September 1939.