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In 1897, Joseon was renamed ''Daehan Jeguk'' ([[Korean Empire]]), and King Gojong became [[Emperor Gojong of Korea|Emperor Gojong]]. A period of Russian influence followed, until Japan defeated Russia in the [[Russo-Japanese War]] (1904-1905). Korea effectively became a [[protectorate]] of Japan on [[25 July]] [], the 1905 Protectorate Treaty having been promulgated without Emperor Gojong's required seal.
In 1910 [[Japan]] effectively annexed [[Korea]] by the [[Japan-Korea Annexation Treaty]]. While the legality of the treaty is still asserted by Japan, it is generally not accepted in Korea because it was not signed by the Emperor of Korea as required and violated international convention on external pressures regarding treaties. Korea was controlled by [[Japan]] under a so-called [[Governor-General of Korea]] until Japan's unconditional surrender to the Allied Forces, on [[15 August]] 1945, with ''de jure'' sovereignty deemed to have passed from Joseon Dynasty to the [[Provisional Government of the Republic of Korea]].