Respuesta :
D. United States' legislature refused to join the League of Nations. America has always pursued this idea of isolationism, and during the Wars, things weren't any different. It didn't want to have anything to do with these wars, which is why it refused to join any of its organizations.
I think the correct answer from the choices listed above is option D. It is the United States legislature that refused to join the League of Nations. The United States Constitution prohibit the United States senate to ratify the League of Nation. Hope this answers the question.