<prompt> Qedela umusho olandelayo:  <response>: ISaigon yawela emabuthweni aseNyakatho yeVietnam asekelwa amabutho aseViet Cong ngo - April 30, 1975. USchlesinger wamemezela ekuseni ngo-Ephreli 29 ukuqala kwe-Operation Frequent Wind, okwakusho ukususwa kwabasebenzi bokugcina bezombusazwe, bezempi kanye nezomphakathi base-US eSaigon ngendiza enophephela emhlane, eyaqedwa ekuseni ngo-Ephreli 30. Akukhona nje kuphela ukuthi iNyakatho yeVietnam yanqoba iNingizimu yeVietnam, kodwa amakhomanisi nawo anqoba eCambodia lapho amaKhmer Rouge ethumba iPhnom Penh ngoApril 17, njengoba amaPathet Lao eLaos aphumelela ekuthatheni iVientiane ngoDecember 2. NjengeSaigon, izisebenzi zaseMelika nezempi zakhishwa ePhnom Penh, ubukhona bezombusazwe baseMelika eVientiane bancishiswa kakhulu, futhi inani labasebenzi baseMelika abasele lancishiswa kakhulu. 