Korea
Japanese annexation and occupation of Korea

In 1910, an already militarily occupied Korea was a forced party to the Japan–Korea Annexation Treaty. The treaty was signed by Lee Wan-Yong, who was given the General Power of Attorney by the Emperor. However, the Emperor is said to have not actually ratified the treaty according to Yi Tae-jin. There is a long dispute whether this treaty was legal or illegal due to its signing under duress, threat of force and bribes.

Korean resistance to the brutal Japanese occupation was manifested in the nonviolent March 1st Movement of 1919, during which 7,000 demonstrators were killed by Japanese police and military. The Korean liberation movement also spread to neighbouring Manchuria and Siberia.

Over five million Koreans were conscripted for labour beginning in 1939, and tens of thousands of men were forced into Japan's military. Nearly 400,000 Korean labourers died. Approximately 200,000 girls and women, mostly from China and Korea, were forced into sexual slavery for the Japanese military. In 1993, Japanese Chief Cabinet Secretary Yohei Kono acknowledged the terrible injustices faced by these euphemistically named " comfort women ".

During the Japanese annexation, the Korean language was suppressed in an effort to eradicate Korean national identity. Koreans were forced to take Japanese surnames, known as Sōshi-kaimei. Traditional Korean culture suffered heavy losses, as numerous Korean cultural artefacts were destroyed or taken to Japan. To this day, valuable Korean artefacts can often be found in Japanese museums or among private collections. One investigation by the South Korean government identified 75,311 cultural assets that were taken from Korea, 34,369 in Japan and 17,803 in the United States. However, experts estimate that over 100,000 artefacts actually remain in Japan. Japanese officials considered returning Korean cultural properties, but to date this has not occurred. Both Koreas and Japan still dispute the ownership of the Dokdo islets, located east of the Korean Peninsula.

There was significant emigration to the overseas territories of the Empire of Japan during the Japanese occupation period, including Korea. By the end of World War II, there were over 850,000 Japanese settlers in Korea. After World War II, most of these overseas Japanese repatriated to Japan. Migrants who remained squatted in informal settlements.
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