<prompt> Rambai muchinyora ndima iyi - Vanhu vanobva kuAmerica vaishandira makambani akazvimirira muVietnam vakanga vasingabatanidzwi nomurayiro waPurezidhendi, uye naizvozvo dzidzo yaavo vakasarudza kuramba vari muSaigon yakazopiwa nezvikoro zvakawanda zvakazvimirira zvakatangwa muSaigon pashure pokubviswa. Chimwe chezvikoro izvi chakadanwa kuti Phoenix Study Group, vane vadzidzi vakarondedzerwa se vana vavafundisi, vemabhizimisi vakapfuma uye vagari vemo veAmerica. Chikoro ichi chakapfuurira kuvapo kusvikira kuwa kweSouth Vietnam  <response>: kumasimba eNorth Vietnam muna April 1975. 