Answer:
LON was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. (Googled)
The founder of LON was Woodrow Wilson.
It was founded in January 10, 1920 but ceased in April 20, 1946.
"The Council was a coalition of the four permanent members: France, Italy, Japan, and the United Kingdom. Germany joined in 1926, but left in 1935. In September 1934, the Soviet Union entered the League of Nations.
Member: Peru; Colombia; Turkey; Soviet Union" (Googled)
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