16 September 1975 (from the Australian-administered UN trusteeship)
20 August 1991 (from Soviet Union)
Religions
Roman Catholic 27%, Evangelical Lutheran 19.5%, United Church 11.5%, Seventh-Day Adventist 10%, Pentecostal 8.6%, Evangelical Alliance 5.2%, Anglican 3.2%, Baptist 2.5%, other Protestant 8.9%, Bahai 0.3%, indigenous beliefs and other 3.3% (2000 census)
Evangelical Lutheran 13.6%, Orthodox 12.8%, other Christian (including Methodist, Seventh-Day Adventist, Roman Catholic, Pentecostal) 1.4%, unaffiliated 34.1%, other and unspecified 32%, none 6.1% (2000 census)
Languages
Melanesian Pidgin serves as the lingua franca, English spoken by 1%-2%, Motu spoken in Papua region note: 820 indigenous languages spoken (over one-tenth of the world's total)
Estonian (official) 67.3%, Russian 29.7%, other 2.3%, unknown 0.7% (2000 census)
