1931
China
Japan invaded Manchuria, China, on 18th September 1931.
Imperial Japan successfully invaded Manchuria, China, in September, 1931.
In 1931, Japan invaded and occupied Manchuria.
Japan decided to invade Manchuria the day after the Mukden incident, in 1931. However, the entire state of Manchuria was not conquered until 1932, so the answer to the question is 1932.
Yes, in 1931.
Japan invaded Manchuria in 1931, established the puppet government of Manchukuo in 1932, and soon pushed south into North China.
Japan invaded Abyssinia in 1931-1933
In 1931, Japan seized the region of Manchuria in northeastern China. This act marked the beginning of the Second Sino-Japanese War and the expansion of Japanese aggression in East Asia.
Starting in 1931 Japan invaded the North Eastern part of China including Manchuria and bordered by the USSR. Please see the related question below.
It was Japan.