The 2003 CIA World Factbook

by United States. Central Intelligence Agency

Mayotte
18 years of age; universal

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

Micronesia, Federated States of
18 years of age; universal

Moldova
18 years of age; universal

Monaco
21 years of age; universal

Mongolia
18 years of age; universal

Montserrat
18 years of age; universal

Morocco
18 years of age; universal (as of January 2003)

Mozambique
18 years of age; universal

Namibia
18 years of age; universal