1928 (MCMXXVIII) ebile ngwagamolele wa go thoma ka Sontaga, ngwaga wa bosenyane ngwagengsome wa 1920s, ngwaga wa bomasomepedi seswai ngwagengkgolo wa Ngwagakgolo 20, le ngwaga wa bomakgolo senyane masomepedi seswai ngwagengkete wa Ngwagakete 2.