Canada: constitutional monarchy
United States: republic
Mexico: republic
Belize: constitutional monarchy
Guatemala: republic
El Salvador: republic
Honduras: republic
Nicaragua: republic
Costa Rica: republic
Panama: republic
Bahamas: constitutional monarchy
Cuba: republic
Jamaica: constitutional monarchy
Haiti: republic
Dominican Republic: republic
Dominica: republic
Grenada: constitutional monarchy
Barbados: constitutional monarchy
Antigua and Barbuda: constitutional monarchy
Saint Kitts and Nevis: constitutional monarchy
Saint Lucia: constitutional monarchy
Saint Vincent and the Grenadines: constitutional monarchy
Trinidad and Tobago: republic
All the countries listed above with a constitutional monarchy
are all headed by Queen Elizabeth II, the monarch of the UK.