During 1931 Japan had invaded Manchuria without declarations of war, breaching the rules of the League of Nations. Japan had a highly developed industry, but the land was scarce of natural resources. Japan turned to Manchuria for oil, rubber and lumber in order to make up for the lack of resources in Japan. During 1931 Japan had invaded Manchuria without declarations of war, breaching the rules of the League of Nations. Japan had a highly developed industry, but the land was scarce of natural resources. Japan turned to Manchuria for oil, rubber and lumber in order to make up for the lack of resources in Japan.
