Historians generally accept two incidents involving China in the 1930's with Imperial Japan. The first was the "Manchurian Incident" (Mukden Incident-near a famous Russian-Japanese battle from the 1904-1905 war) which occurred in 1931/1933, depending on your source, which entailed the destruction a railroad track in Manchuria, triggering a Japanese military response. The second incident, occurred at or near the "Marco Polo Bridge", in 1937/1939, again according to your source of information. This too, triggered a Japanese military response.
Japan invaded China because it wanted to expand its territory and become a great power. Japan also needed the Natural Resources that China possessed.
China.
In 1931, Japan invaded and occupied Manchuria.
China
Imperial Japan successfully invaded Manchuria, China, in September, 1931.
Japan is gaining very little after WW I China in civil war, encourages Japan to invade Left League of Nations Ally with Germany Invade China (not part of WW2) And then declaring war on the world with Germany and Italy
China
China.
In 1931, Japan invaded and occupied Manchuria.
Japan
1931
China
China andManchuria.
japan was desperate for resources.
Japan was desperate for resources
The Mongols tried to invade Japan.
Japan fought against China and Korea.
China Korea