What were the first members of the league of nation?

The League of Nations, established after World War I in 1920, initially included 42 founding members. Key founding members included countries such as the United Kingdom, France, Italy, Japan, and the newly formed states of Czechoslovakia and Yugoslavia. Over time, the League expanded, but its effectiveness was limited, and it ultimately failed to prevent the outbreak of World War II. The League was dissolved in 1946, and its responsibilities were transferred to the newly formed United Nations.