Editing Isolationism (section)

===Cambodia===
{{Main|Post-Angkor Period}}
{{See also|Khmer Rouge}}
From 1431 to 1863, the [[Post-Angkor Period|Kingdom of Cambodia]] enforced an isolationist policy. The policy prohibited foreign contact with most outside countries. When [[Pol Pot]] and the [[Khmer Rouge]] came to power on 17 April 1975 and established [[Democratic Kampuchea]], the urban population of every city, including [[Fall of Phnom Penh|Phnom Penh]], was relocated to the countryside. This was ordered by the [[Communist Party of Kampuchea]] and the secret police [[Santebal]], and they then established an infamous prison gulag inside the torture chamber called [[Tuol Sleng Genocide Museum|Tuol Sleng (S-21)]]. Cambodia proceeded to implement the [[Year Zero (political notion)|Year Zero]] policy, hastening isolation from the rest of the world. Ultimately, the authority of the Khmer Rouge and its isolationist policy would collapse in 1978 when the [[Vietnam]]ese invaded the country and then overthrew Pol Pot on 7 January 1979.