China was invaded in 1931, without declaration of war, when Japan unilaterally annexed Manchuria, i.e. northern China. They then continued with the annexation of the large province of Jehol in 1934. In 1937, Japan launched a full scale invasion into the remaining China. This aggression was part of Japan's policy of liberating Japan from her dependence on foreign states. Japan had a highly developed industry, but hardly any Natural Resources at all, not even enough to feed themselves in fact. This was not an economic problem, because Japans industry could easily fund all necessary imports, and still generate impressive profits. Just like Japan does today (she still has no significant natural resources). But it was a political problem, or at least the Japanese militarist/nationalist government thought so, because almost all of Asia was in European or US hands. The latter could thus stop deliveries of needed goods and raw materials in order to force Japan to act according to their wishes. Japan therefore pursued a policy of carving an empire for herself on mainland Asia (Korea and China), in order to secure the vast resources of raw materials available there, for her industries and society. She could have just bought them instead, and both Japan and China would have prospered, but Japanese leadership at the time was marked by medieval lines of thought.
they invaded manchuria because japan had a huge population so they needed to extend more land and also they needed goods like minerals. This was also a chance to capture all eastern Asia
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Japan
In 1931, Japan invaded and occupied Manchuria.
Japan was the totalitarian nation that invaded Manchuria. This attack occurred in 1931 because Japan was trying to gain control over China for the entire province.
Starting in 1931 Japan invaded the North Eastern part of China including Manchuria and bordered by the USSR. Please see the related question below.
Japan
Japan invaded Manchuria in 1931 .
The Japanese took over Manchuria in 1932. This was an attempt by Japan to have control over some of the land that belonged to the Chinese.
Japan invaded Manchuria in the 1930's.
In 1931, Japan invaded and occupied Manchuria.
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Japan.
Japan
Japan invaded Manchuria on 19 September 1931. Following the Mukden incident (staged by Japanese spies), Japan's Kwantung Army immediately invaded Manchuria and established a puppet state they names Manchuko.
Japan
In 1931, Japan invaded and occupied Manchuria.
USSR never invaded Manchuria, Japan did from 1931-33