Marshall Islands
1 May 1979
Mauritania
12 July 1991
Mauritius
12 March 1968; amended 12 March 1992
Mayotte
4 October 1958 (French Constitution)
Mexico
5 February 1917
Micronesia, Federated States of
10 May 1979
Moldova
adopted 29 July 1994; effective 27 August 1994; note -
replaced 1979 Soviet constitution
Monaco
17 December 1962; modified 2 April 2002
Mongolia
13 January 1992
Montenegro
approved 19 October 2007 (by the Assembly)