Answer:
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 accusations of war crimes against the Chinese became commonplace.
or
Japan needed more and more raw materials to create its heavy industry.
Japan no longer had enough raw materials in its Empire, and needed to get more by taking over more of Asia.
Step-by-step explanation: