Nigeria
new constitution adopted May 1999
Niue
19 October 1974 (Niue Constitution Act)
Norfolk Island
Norfolk Island Act of 1979
Northern Mariana Islands
Constitution of the Commonwealth of the
Northern Mariana Islands effective 1 January 1978; Covenant
Agreement effective 4 November 1986
Norway
17 May 1814; amended many times
Oman
none; note - on 6 November 1996, Sultan QABOOS issued a royal
decree promulgating a basic law considered by the government to be a
constitution which, among other things, clarifies the royal
succession, provides for a prime minister, bars ministers from
holding interests in companies doing business with the government,
establishes a bicameral legislature, and guarantees basic civil
liberties for Omani citizens
Pakistan
12 April 1973; suspended 5 July 1977, restored with
amendments 30 December 1985; suspended 15 October 1999, restored 31
December 2002; amended 31 December 2003
Palau
1 January 1981
Panama
11 October 1972; major reforms adopted 1978, 1983, 1994, and
2004
Papua New Guinea
16 September 1975