<prompt> Bhala okuqhubekayo kwalesi sigaba - uHansen wayeyilungu leKomiti Yomhlaba Wonke Yezolimo Embukisweni Womhlaba Wonke eSt. Louis, eMissouri  <response>: ngo-1904 nesithunywa sase-United States eMhlanganweni Wokuqala Wezizwe Zonke Wezakhi Zofuzo eLondon, eNgilandi ngo-1906. Wakhonza njengonobhala weSouth Dakota Horticultural Society iminyaka eminingi. Ngo-1949, kwamiswa isikhumbuzo sokuhlonipha uDkt. Hansen neminikelo yakhe ekolishi laseSouth Dakota State College. 