1892–1979 Gilbert and Ellice Islands 8 1893–1978 British Solomon Islands 9 - 20th century 1900–1970 Tonga (protected state) 1900–1974 Niue 6 1901–1942 * Commonwealth of Australia 1907–1953 * Dominion of New Zealand 1919–1942 Nauru 1945–1968 Nauru 1919–1949 Territory of New Guinea 1949–1975 Territory of Papua and New Guinea 10