Woodrow Wilson's solemn referendum in 1920 was?

Answer 1

Wilson's "solemn referendum" referred to his belief that the next presedential election would determine the fate of the Treaty of Versailles... which actually ended up true, since after Wilson was out of office, the League of Nations and the Treaty in general were both voted down.

Answer 2

Woodrow Wilson's solemn referendum in 1920 was a campaign that sought to gain public support for his foreign policy goals, particularly the ratification of the Treaty of Versailles and the establishment of the League of Nations. Wilson embarked on a cross-country speaking tour, urging voters to elect members of Congress who would support his agenda. However, his efforts were ultimately unsuccessful, as the American public and Congress rejected the treaty and the United States did not join the League of Nations.