Andorra
Andorra's first written constitution was drafted in 1991;
approved by referendum 14 March 1993; effective 28 April 1993
Angola
adopted by People's Assembly 25 August 1992
Anguilla
Anguilla Constitutional Order 1 April 1982; amended 1990
Antigua and Barbuda
1 November 1981
Argentina
1 May 1853; amended many times starting in 1860
Armenia
adopted by nationwide referendum 5 July 1995; amendments
adopted through a nationwide referendum 27 November 2005
Aruba
1 January 1986
Australia
9 July 1900; effective on 1 January 1901
Austria
1920; revised 1929; reinstated 1 May 1945; note - during the
period 1 May 1934-1 May 1945 there was a fascist (corporative)
constitution in place
Azerbaijan
adopted 12 November 1995; modified by referendum 24
August 2002