 Ramba uchiverenga ndima iyi - Muna 1841 rwizi rwaizivikanwa panguva iyoyo saMarys River rakatanga kuva nzira yeCalifornia Trail neBartlesonBidwell Party, yakazova nzira huru yepasi yevaifamba kuenda kuminda yegoridhe yeCalifornia. Muna 1845 rwizi rwacho rwakatsvakurudzwa naJohn C. Frémont, uyo akagadzira mepu yakazara yenzvimbo yacho ndokupa rwizi zita raro razvino. Muna 1869 rwizi rwacho rwakashandiswa sorutivi rwenzira yeCentral Pacific yeTranscontinental Railroad. 