The Japanese invasion of Manchuria was a military incursion in 1931 that was predicated on the staged Mukden Incident of September
18, 1931. Manchuria was invaded by the Kwantung Army of the Empire of Japan, beginning on September 19, 1931, immediately
following the Mukden Incident. The Japanese established a puppet state, called Manchukoku, and their occupation lasted until
the end of World War II.