Argentina (withdrew 1921 on rejection of an Argentine resolution that all sovereign states would be admitted to the League.[1] It resumed full membership 26 September 1933[2]) Belgium Bolivia Brazil (withdrew 14 June 1926) British Empire separate membership for:[3] United Kingdom Australia Canada India New Zealand South Africa Chile (withdrew 14 May 1938) China Colombia Cuba Czechoslovakia (occupied by Germany 15 March 1939)[4] Denmark[5] El Salvador (withdrew 11 August 1937) France (Vichy France withdrew 18 April 1941; withdrawal not recognised by Free French forces) Greece Guatemala (withdrew 26 May 1936) Haiti (withdrew April 1942) Honduras (withdrew 10 July 1936) Italy (withdrew 11 December 1937) Japan (withdrew 27 March 1933) Liberia Netherlands Nicaragua (withdrew 27 June 1936) Norway Panama Paraguay (withdrew 23 February 1935) Persia (known as Iran from 1934) Peru (withdrew 8 April 1939) Poland Portugal Romania (withdrew 11 July 1940)[6] Siam (known as Thailand from 1939)[7] Spain (withdrew May 1939) Sweden Switzerland Uruguay Venezuela (withdrew 12 July 1938) Yugoslavia (known as Kingdom of Serbs, Croats and Slovenes until 1929)[8]