<prompt> Ho nka karolo ha US Ntoeng ea Vietnam ho nkile lilemo tse kae?nan  <response>: Instruction in English: How many years did the US involvement in the Vietnam War last? . Response in English: The United States involvement in the Vietnam War began in the early 1950s, with the first troops arriving in 1955, and ended with the fall of Saigon on April 30, 1975. The active military participation of the United States in the conflict, commonly considered as starting in 1964 with the Gulf of Tonkin incident and ending in 1973 with the Paris Peace Accords, lasted approximately 8-9 years. . Response in Sesotho: Ho kenya letsoho ha United States Ntoeng ea Vietnam ho qalile mathoasong a lilemo tsa bo-1950, ha masole a pele a fihla ka 1955, me a qetella ka ho oa ha Saigon ka la 30 April, 1975. Ho nka karolo ka mafolofolo sesoleng ha United States ntoeng, ho nahanoang hangata. joalo ka ho qala ka 1964 ka ketsahalo ea Kou ea Tonkin le ho fela ka 1973 ka Tumellano ea Khotso ea Paris, e nkile lilemo tse ka bang 8-9. 