The Sakhalin Island is disputed between ___________.?

A. China & Japan
B. China & Taiwan
C. Japan & Korea
D. Japan & Russia

Sakhalin was claimed by both Russia and Japan over the course of the 19th and 20th centuries. These disputes sometimes involved military conflict and divisions of the island between the two powers. In 1875, Japan ceded its claims to Russia in exchange for the northern Kuril Islands.