What is one factor that motivated Japan's imperialism before World War II?
A. Japan lacked many important natural resources.
B. Japan's neighbors were ruled by anti-Japanese dictatorships.
C. Japan felt threatened by China's growing empire.
D. Japan's morale was low after the Treaty of Versailles
One factor which motivated Japan's imperialism before World War II was that they lacked many important natural resources - a, and wanted to gain therse by conquering other nations - which they partially succeeded but eventually also lost.