Columbia subject headings:
Central America--Relations--Mexico--Chronology.
Mexico--Relations--Central America--Chronology.
Harvard subject headings:
Central America--Foreign relations--Mexico--Chronology.
Central America--Relations--Mexico--Chronology.
Mexico--Foreign relations--Central America--Chronology.
Mexico--Relations--Central America--Chronology.
Princeton subject headings:
Central America--Relations--Mexico--Chronology.
Mexico--Relations--Central America--Chronology.