The United Nations were formally called The League of Nations.
Just read carefully from the links that you are sending, @joeyarnoldvn – UN were not ‘formally called’ League of Nations. League of Nations was an organization formed after the WWI with the intention that the Great War never happens again. It crashed under its own corruption and with the help of Hitler and Mussolini. UN declaration and name were established in 1942 with the same intentions, and they also crashed under the burden of corruption. The only difference is that there’s no Hitler and Mussolini, so Trump must do it single-handed :)