Although President Wilson’s efforts was to shape the terms of postwar peace, the majority of American politicians and the American public continued to support isolationism as long as the United States entry into World War II seemed unavoidable. Hence, the nation with the initial notion of non-interventionism is:
Non-interventionism or non-intervention is an ideology or national foreign policy doctrine that opposes interference in the domestic politics and affairs of other countries but, in contrast to isolationism, is not necessarily opposed to international commitments in general.
Therefore, the nation involved is the United States.
learn more about Non-interventionism from here: https://brainly.com/question/9180217
