Genocide in Cambodia By chelsea0307 Period: Jan 1, 1960 to Jan 1, 2000 Genocide in Cambodia Jan 1, 1967 Khmer Rouge Cimmunist Party becomes armed force and opposes socialists party Jan 1, 1970 Prince Sihanouk joins Khmer Jan 2, 1970 Lon Nol becomes leader of socialist regime Apr 1, 1975 Lol Nol Surrenders as America pull out of Cambodua Apr 17, 1975 Khmer Rouge now leads Cambodia Dec 25, 1978 Vietnam invades Cambodia Jan 1, 1980 Vietnamese pull out of Cambodia Jan 1, 1981 Cambodia is being watched by United Nations Jun 1, 1982 All Cambodian and US forces combine to fight Vietnamese Jan 1, 1993 Free elections are held, Royalists party leads Cambodia Jan 1, 1999 Khmer Rouge surrenders to Hun Sens Royalists party