president wilsons proposal to form the league of nations was most weakened by\no his illness while traveling…

Brief Explanations:

Wilson's illness during his cross - country tour to gain public support for the League of Nations severely limited his ability to effectively advocate for it. His health issues prevented him from fully presenting his case, which was a major setback. Campaign funds were not the main issue, his anti - German sentiment was not the most weakening factor, and while the disagreement with Lodge was significant, his illness had a more immediate and direct negative impact on promoting the League.

Answer:

his illness while traveling to gain support.