(A) Britain
(B) ** Germany
(C) ** USA
(D) ** USSR
EXPLANATIONS BELOW
Concept note-1: -Soviet Russia and the USA were not a part of the League of Nations.
Concept note-2: -Despite formulating the concept and signing the Covenant, the United States never joined the League of Nations, and some relatively-isolated sovereign states in Asia also did not join, including Saudi Arabia, Yemen, Mongolia, Nepal, and Bhutan.
Concept note-3: -Russia was expelled out of League of Nations for invading Finland and USA never joined the league, ironic because it was America who designed it and these were the two major countries who were not members of League of Nations. Was this answer helpful?
Concept note-4: -Russia, now the Soviet Union, was not invited to join the League due to the radical policies of the new communist government. The Soviet Union finally became a member of the League in 1935. In November 1919, the US Senate voted against accepting membership to the League, and the nation never joined.
Concept note-5: -September 18, 1934 general meeting of the League of Nations adopted a resolution on the admission of the USSR into the League and the inclusion of its representative to its Board as a permanent member.