Ramba uchiverenga ndima iyi - Mauto eGorkha aibva kuNepal akapinda muDarjeeling kuma1780, akarwisa guta guru reSikkim, Rabdentse, ndokupinza nharaunda dzakasvika kuRwizi rweTeesta muNepal. Pakazosvika 1816 nharaunda yose yaizivikanwa seSikkim yeBritain yakanga yava yeNepal. Pashure peHondo yeAnglo-Gorkha
Muna 1816, Nepal yakapa chikamu chimwe muzvitatu chenzvimbo dzayo kuBritain pasi peSugauli Treaty ya1816, iyo yaisanganisira nzvimbo yepasi pakati peRwizi rweMechi neTeesta. Musi wa 10 Kukadzi 1817, maBritish akadzorera nzvimbo yepasi pakati peMechi neTeesta kuSikkimese Chogyal pasi peChibvumirano cheTitalia.