Japanese expansion into material rich regions.
China was in a civil war and the military could not defend against the Japanese army.
China
Which Japanese War? China 1894? Russia 1904? China 1933? Russia 1939 (Nomonhan Incident)? World War II (1941-45)?
The clue is in the name, Sino -- to do with China.
the china had the people resources
1894-1895
Some historians refer to the 1930's invasion of China by Japan, as the 2nd Sino-Japanese War. The first was in 1894.
Because they lost.
China vs Japan.
China vs Japan.
Japanese invasion of Manchuria
the Japanese . the Japanese invaded china in 1937