The U.S congress and people supported it
Original Answer: Because they are decades away. Improved: The United Nations are not a country. They couldn't have "joined" the League of Nations. The League of Nations was the predecessor of the United Nations - the League of Nations failed, and so, many years later in 1942 (I believe it was that year) they founded the United Nations as an improved "League of Nations."
The United States did not participate in the League of Nations because it was not willing to get involved in Europe's wars.
The precursor to the Current United Nations was called the League of Nations. The League of Nations was founded in 1919. When the United Nations was formed in 1945, the League of Nations basically ceased to exist.
United nations
the league of nations was weaker than the UN because the united nations was stable UN like the league.
the league was important because it failed and led to ww2 which prompted the United nations which has been "successful"
The United States never entered the League of Nations because they never ratified the Treaty of Versailles, which proposed the league.
Yes because the UN is a modern version of the League of Nations which was thought of from the US.
US with their presedent Woodrow Wilson who insisted on the ;League but never acctually joind. :/
The forerunner of the United Nations was called the League of Nations.
Nothing. The League of Nations was the predecessor to the United Nations. (:
There is no League of Nations. We have United Nations