What was the primary cause of the war between China and Japan that began in 1931?

Question

Quizplus · Accepted Answer

The Japanese unprovoked attack upon Manchuria, also known as the Mukden Incident in 1931, was the primary cause of the war between China and Japan. Japan saw Manchuria as a region ripe for expansion and conquest, and used the supposed sabotage of a railway as a pretext for their invasion. This led to a conflict that would eventually escalate into the Second Sino-Japanese War, which lasted until 1945.

What Was the Primary Cause of the War Between China