Answer: U.S failure to assent to the League of Nations effectively made the League of Nations weak and ineffectual. This is because although England and France were powerful, the U.S also had enough military muscle that would have made the league powerful and prevent the threat of conflict
<span>It made the League of Nations weak and ineffectual, because after World War I, the United States was the only country left with enough muscle to enforce the League's decisions.
