(A) Poland
(B) ** Manchuria
(C) India
(D) Russia
EXPLANATIONS BELOW
Concept note-1: -Seeking raw materials to fuel its growing industries, Japan invaded the Chinese province of Manchuria in 1931. By 1937 Japan controlled large sections of China, and war crimes against the Chinese became commonplace.
Concept note-2: -On September 18, 1931, an explosion destroyed a section of railway track near the city of Mukden. The Japanese, who owned the railway, blamed Chinese nationalists for the incident and used the opportunity to retaliate and invade Manchuria.
Concept note-3: -On September 18th, 1931, in violation of all its treaty obligations, Japan occupied Manchuria, in northeast China. It was the first step on the path to World War II.