The Spanish Protectorate in Cambodia was a vassal state of the Spanish Empire briefly controlled from 1597 to 1600. This territory came under Spanish domination following the SpanishâÂÂCambodian War, in which Spanish conquerors supported Cambodian King Barom Reachea II during CambodiaâÂÂs internal conflicts in the Cambodian Dark Ages. King Reachea II accepted the condition of becoming a vassal and tributary of Spain after being appointed monarch, but both the king and his foreign supporters were killed by Malay Muslims two years after the protectorate was established.