<prompt> Qedela umusho olandelayo: UHansen wayeyilungu le-International Jury of Horticulture eMhlanganweni Wamazwe Ngamazwe Wamazwe Omhlaba  <response>: UMbukiso Wamazwe Omhlaba eSt. Louis, eMissouri ngo-1904 kanye 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. 