Interior system
The Councel, Britain, France, Italy, Japan, had the power of decision.
Unanimosity regarding votes in the Annual Meetings.
Big countries such as Germany, USSR and the USA were not members of the League
Each member state were separate nations rendering them to act on self-centered aims and pursue selfish interest.
Britain and France un able to take the lead, unable to control the Manchurian Crisis or the Abyssinian Crisis, in fear of Japan and Italy.
Britain and France were unable to protect Lithuania in hope of keeping Poland as a defense against Germany.
Didn't have a standing army, but relied on member states to provide military support suitably.
The League of Nations.
The Japanese military largely dismissed the League of Nations' condemnation of its invasion of Manchuria in 1931. They viewed the League as ineffective and continued their military expansion, asserting that their actions were justified for Japan's security and economic interests. In response to the League's criticisms, Japan ultimately withdrew from the organization in 1933, further solidifying its stance and pursuing aggressive policies in the region.
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.
Nothing. The League of Nations was the predecessor to the United Nations. (:
There is no League of Nations. We have United Nations
The league of nations was created out of WWI.
The United Nations predecessor organization was the League of Nations which was founded at the end of WW1 as a result of the Treaty of Versailles and managed to attract at its best the participation of 58 countries during 24 September 1934 and 23 February 1935.
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."
League of Nations
At it's height the League of nations supported 58 members
The League of Nations
The organization Woodrow Wilson proposed in 1919 for settling world problems was The League of Nations. It was the precursor to the United Nations.