Question

What are the reasons the United States joined the League of Nations?

Answer 1

One of the reasons for its downfall was that, after a vote, the American public refused to join. The League did not have the power it needed to enforce any of the rules that made it up. This later proved to be a fatal flaw in the League's structure. Also, America didn't want to get involved in European affairs.

Answer 2

The League of Nations was established at the end of World War I as an international peacekeeping organization. Although US President Woodrow Wilson was an enthusiastic proponent of the League, the United States did not officially join the League of Nations due to opposition from isolationists in Congress.