The 2001 CIA World Factbook

by United States. Central Intelligence Agency

Mauritius:
18 years of age; universal

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:
21 years of age; universal

Mozambique:
18 years of age; universal