Mauritius
based on French civil law system with elements of English
common law in certain areas; accepts compulsory ICJ jurisdiction,
with reservations

Mayotte
French law

Mexico
mixture of US constitutional theory and civil law system;
judicial review of legislative acts; accepts compulsory ICJ
jurisdiction, with reservations

Micronesia, Federated States of based on adapted Trust Territory laws, acts of the legislature, municipal, common, and customary laws

Midway Islands
the laws of the US, where applicable, apply

Moldova
based on civil law system; Constitutional Court reviews
legality of legislative acts and governmental decisions of
resolution; accepts many UN and Organization for Security and
Cooperation in Europe (OSCE) documents

Monaco
based on French law; has not accepted compulsory ICJ
jurisdiction

Mongolia
blend of Soviet, German, and US systems that combine
"continental" or "civil" code and case-precedent; constitution
ambiguous on judicial review of legislative acts; has not accepted
compulsory ICJ jurisdiction

Montenegro
based on civil law system

Montserrat
English common law and statutory law