Columbia subject headings:
Mexico--Foreign relations--Spain.
Prim y Prats, Juan, marquis de los Castillijos, 1814-1870.
Spain--Foreign relations--Mexico.
Harvard subject headings:
Mexico--Foreign relations--Spain.
Mexico--History--European intervention, 1861-1867--Sources.
Prim y Prats, Juan, marqués de los Castillejos, 1814-1870.
Spain--Foreign relations--Mexico
Princeton subject headings:
Mexico--Foreign relations--Spain.
Mexico--History--European Intervention, 1861-1867--Sources.
Prim y Prats, Juan, marqués de los Castillejos, 1814-1870.
Spain--Foreign relations--Mexico.