The 2004 CIA World Factbook

by United States. Central Intelligence Agency

Maldives
21 years of age; universal

Mali
18 years of age; universal

Malta
18 years of age; universal

Man, Isle of
18 years of age; universal

Marshall Islands
18 years of age; universal

Martinique
18 years of age; universal

Mauritania
18 years of age; universal

Mauritius
18 years of age; universal

Mayotte
18 years of age; universal

Mexico
18 years of age; universal and compulsory (but not enforced)