<prompt> Bhala okuqhubekayo kwalesi sigaba - Japan bahlasela Sakhalin  <response>: esigabeni sokugcina sempi yaseRussia neJapane ka-19041905, kodwa ngokwesivumelwano sika-1905 sasePortsmouth savunyelwa ukugcina kuphela ingxenye eseningizimu yesiqhingi ngaphansi kwe-50 N parallel. IRussia yagcina ingxenye esenyakatho, nakuba amaJapane anikezwa amalungelo okuhweba anenzuzo, kuhlanganise namalungelo okudoba nawokumbiwa kwamaminerali enyakatho. Ngo-1907, iKarafuto Prefecture yasungulwa ngokusemthethweni, nenhloko-dolobha e-Ōtomari. Ngo-1908, inhloko-dolobha yathuthelwa eToyohara. 