The Japanese invasion persuaded the Chinese Communist Party and warlords to unite with the Kuomintang (Japan, Communist).
The invasion of Manchuria was the Japon invasion of this region (Northeast Asia) in hands of the Kwantung Army.
During this period, the Kwantung Army controlled the Manchurian railway, which was fundamental for the economy.
In conclusion, the Japanese invasion persuaded the Chinese Communist Party and warlords to unite with the Kuomintang.
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