There's many answers for this question, as long as it's a similar word to disbelief. President Roosevelt's reaction was pretty much thinking, "This is unbelievable." So therefore, you can put disbelief or distrust.
The Republican Isolationists refused to ratify President Wilson's League of Nations plan because D) they were opposed to Article 10 that could infringe upon the United States' right to declare war and expand its territories.
Yes because national crises causes stress and people to sway their opinion.
