1731 (MDCCXXXI) ebile ngwaga wa go thoma ka Mošupologo, ngwaga wa bobedi ngwagengsome wa 1730s, ngwaga wa bomasometharo tee ngwagengkgolo wa Ngwagakgolo 18, le ngwaga wa bomakgolo šupa masometharo tee ngwagengkete wa Ngwagakete 2.