Umm, this makes no sense but I’ll explain what happened. Ok the Legue of nations was a document stating that if one of these countries in the legue of nation is in need of help the others must help. America remembering the words of George Washington, u k to not be involved in other countries state affair, this was already ignored once and the Americans vetoed against it because France was in some type of war and England was also so the Americans were afraid of the debt it would cost so they vetoed it.
