<prompt> Pedzisa mutsara unotevera: Munguva yeHondo yeRussia neJapan, Japan yakakwanisa  <response>: vapinde ndokutora chitsuwa chose cheSakhalin kwamavhiki anoverengeka muna July 1905. NeChibvumirano chePortsmouth, icho chakagumisa hondo, Russia yakapa hafu yekumaodzanyemba kweSakhalin kuJapan yakasanganiswa seKarafuto Prefecture, nepo mauto eJapan akabuda muhafu yayo yekuchamhembe; nokudaro nyika mbiri idzi kekutanga munhoroondo yavo dzakagovana muganho wepasi, uyo wakafamba uchitevedza 50th parallel kuchamhembe kwese chitsuwa cheSakhalin, kubva kuStrait yeTartary kusvika kuGungwa reOkhotsk. Kunyange zvazvo Japan yakatora chikamu chokuchamhembe kweSakhalin muna 1920-1925, panguva uye pashure peHondo yeVanhu yeRussia, kutonga kweSoviet kuchamhembe kweSakhalin kwakagadzwa muna 1925, uye 50th parallel yakava muganhu weJapan-USSR. 