Which of the "Big Five" personality factors is characterized (on the high end) by traits like imaginative and independent and (at the low end) by traits like practical and conforming?

Openness

Explanation:

Openness is the personality factor characterized by characteristics as imaginative and independent, along with practical and conformed characteristics. Individuals who fit this personality type have a strong acceptance of changes and new experiences, but they also like stability and calm. They have a high capacity for reflection, kindness, friendliness and seclusion, in some moments.

At the end of World War I, President Wilson offended members of the United States Senate by travelling to Europe and opposing the League of Nations as well as opposing the views of Henry Cabot Lodge, thereby excluding them from the peace process.  President Wilson was the President of the United States during the first world war. He tried to keep the USA out of the war but ultimately had to join the Allies against Germany in 1917.  He also help broker a peace treaty with the USA joining the League of Nations. The US Congress vetoed this idea.