Because, unlike the United Nations, it never had even close to total membership of the countries of the world.
Strong nations like America and Russia not joining meant the League could not enforce its decisions.
When Russia eventually joined, it then left - as did Germany. Showing that if a nation disagreed with the League, it was easy to leave, and be outside their jurisdiction.
The same happened with Japan, which was even a permanent member of its Security Council, with withdrew when it was criticised for invading Manchuria.
No: The Countries Involved In The League of Nations Are As Follows:
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.
The forerunner of the United Nations was called the League of Nations.
The League of Nations (LON) .
A League of Nations Mandate was what they called it when one area was put under the direction of another for the purposes of the League of Nations
League of Nations
League of Nations
Covenant of the League of Nations...Or just "League of Nations" for short.
League of Nations
league of nations
League of Nations
The League of Nations never "became" the United Nations. The League of Nations was formed as a result of World War 1 and fell apart as the world moved into World War 2. During the War, those national with which the US and Britain were allied were often called "The United Nations." After the War, in 1946, a formal organization called The United Nations was created, but it was not a continuation of the old League of Nations, which had been discredited by its inability to respond to the increasing belligerency of Germany and Italy.
The League of Nations.