It was a country in China
Japan invaded Manchuria in 1931 - before the start of World War 2.
Japan attacked Manchuria, this causing the second world war.
Manchuria
16 countries
Manchukuo (Manchuria) in China .
Japan had fought a war with Russia and had invaded Manchuria prior to the start of World War II.
Japan invaded Manchuria in 1931 as a part of a larger strategy of territorial expansion, mostly for its resources. The US and Japan would not be engaged in World War 2 for another 10 years.
Manchuria was neither. It was invaded by Japan in the 1930's and was under Japanese occupation during the war.
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At the begining of World War 2 they invaded Indochina (Vietnam).
Manchuria
The First World War was a contributing factor to starting the Second World War, but for the Japanese and a part of China called Manchuria, to the west, the War started in 1931.