Japan attacked china in 1937 this is when they launched a fullscale attack.
Japan attacked and occupied Manchuria in 1931. Japan launched a full scale attack on China in 1937.
IF you mean why did Japan attack CHINA; the Japanese attacked China, because Japan is an island nation with few natural resources, and China has a lot of natural resources, so Japan attacked China to get it's resources to help the Japanese people.
China did not attack Pearl Harbor, Japan did.
They didnt attack it, they demanded it from Vichy France, and it was in 1940.
China did not side with Japan. The attack upon China unified both sides of the Chinese Civil War to defend China from Japan with assistance from the UK and the US.
they got attacked
China. Japan invaded China in 1937.
China, and the USA supported China.
china
They attacked Manchuria in 1939.
What a muddle! It was the other way round. Japan invaded Manchuria in 1931 and then, in 1937, launched a full scale attack on China. China has never dominated Japan.