樺太 からふと千島 ちしま交換 こうかん条約 じょうやくであれば
kara futo chi shimakōkanjōyakudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 樺太千島交換条約

1. If the Sakhalin-Kuril Islands Exchange Treaty…; Were the Sakhalin-Kuril Islands Exchange Treaty…

Ba Conditional