Korea (1910–1945)

Korea (1910–1945)
Native name	Daehan Jeguk
Conventional long name	Korea under Japanese rule
Common name	Korea (1910–1945)
Era	Imperialism
Status	Colony of the Empire of Japan
Event start	Japan–Korea Annexation Treaty
Date start	1910-08-29
Event end	Soviet and US occupation; Japanese surrender
Date end	1945-08
Capital	Seoul
Population estimate	24 million (approx.)
Currency	Korean yen

Korea (1910–1945) was the period in which the Korean Peninsula was annexed by the Empire of Japan and governed as a colony until the end of World War II. The era encompassed administrative reorganization under the Governor-General of Korea, large-scale economic integration with Imperial Japan, cultural suppression and assimilation policies, widespread resistance including the March 1st Movement, and eventual liberation followed by division amid the Soviet Union and United States occupations. The legacy shaped postwar outcomes such as the Korean Peninsula partition and the origins of the Republic of Korea and Democratic People's Republic of Korea.

Annexation and Colonial Administration (1910–1919)

The 1910 formal annexation followed the Japan–Korea Protectorate Treaty of 1905 and the 1907 removal of Emperor Gojong's prerogatives, culminating in the Japan–Korea Annexation Treaty signed by officials including Terauchi Masatake and Joseon ministers; the office of Governor-General of Korea centralized authority under figures like Terauchi Masatake and later Saitō Makoto, while administrative control extended through provincial offices in Pyongyang, Wonsan, and Busan. Colonial institutions merged legal systems under the Japanese Empire framework, implemented land surveys linked to Chōsen Bank credit networks, and deployed police forces modeled on the Keishichō to suppress dissent in cities such as Seoul and ports like Incheon. International responses invoked treaties including the Treaty of Portsmouth and debates at the League of Nations concerning colonial rule, while Korean elites such as members of the Independence Club and royal family figures confronted dispossession.

Political Movements and Independence Efforts (1919–1930s)

The March 1st Movement of 1919, catalyzed by events in Paris Peace Conference and leaders like Yu Gwan-sun and activists linked to groups such as the Korean Provisional Government in Shanghai, sparked mass demonstrations across cities including Seoul, Suwon, and Daegu, and inspired diaspora mobilization in San Francisco and Vladivostok. Political organizing diversified into factions: the Korean Communist Party and nationalist bodies within the Provisional Government of the Republic of Korea clashed with independence militias such as the Korean Liberation Army and guerrilla formations led by figures like Kim Il-sung in Manchuria and Kim Koo in Shanghai. International networks involved the Comintern, Chinese entities like the Kuomintang, and Japanese police countermeasures such as the Special Higher Police to monitor activists in urban centers including Busan and Pyongyang.

Economic and Social Changes under Japanese Rule

Colonial economic policy prioritized resource extraction tied to South Manchuria Railway interests and industrial projects like the Keihin Industrial Area, channeling capital through institutions such as the Bank of Chosen and corporations including Nissan affiliates, which reshaped agrarian relations after the Land Survey of 1910–1918 and increased tenancy in regions like Jeolla and Gyeongsang. Infrastructure investments—railways linking Seoul to Sinuiju, ports at Busan and Incheon, and hydroelectric projects at Andong—facilitated labor migration to urban factories and to Japanese industries in Kobe and Osaka, while rural hardships fed migration to Manchukuo and plantations in Karafuto. Social stratification intensified as Korean elites faced assimilation pressures while peasant movements and labor unions such as the Korean Labor Movement staged strikes in textile centers and mines like P'yongsan.

Cultural Policies, Language, and Education

Cultural policy oscillated between repression and managed cultural expression, with early efforts by the Governor-General of Korea promoting Japanese-language schools, censoring Korean-language newspapers like Donga Ilbo and controlling publishing through the Korean Language Society suppression; educational institutions such as Keijo Imperial University served colonial elites, while mission schools and secular private schools fostered nationalist intellectuals like Ahn Changho. The Name Change Policy (Sōshi-kaimei) and campaigns for Japanese language adoption sought assimilation, while Korean cultural movements engaged through organizations such as the Joseon Music Association and intellectual journals influenced by figures like Yi Kwang-su and Kim Tae-sŏng.

Resistance, Repression, and Security Measures (1930s–1945)

From the 1930s, Japanese authorities expanded security apparatuses including the Tokkō and military police to suppress leftist and nationalist networks after incidents like the Hunchun Incident and assassination attempts against officials, prosecuting dissidents in public trials in Seoul and deportations to Karafuto and Taiwan. Repressive measures targeted organizations such as the Korean Independence Party and labor unions, while imperial security priorities deepened alongside campaigns in Manchukuo and the wider Second Sino-Japanese War, leading to mass arrests of figures such as Kim Koo and surveillance of diaspora centers in Harbin and Shanghai.

Mobilization for War and Forced Labor/Comfort Women

During wartime mobilization, conscription and recruitment programs directed Korean laborers to factories and mines in Japan and occupied territories, coordinated via institutions like the Ministry of Colonial Affairs and transport nodes including Keijo Station and Dalian Port; large numbers were conscripted as industrial workers and soldiers into units associated with the Imperial Japanese Army and auxiliaries. The regime's sexual slavery system involved military-brokered brothels termed "comfort stations", implicating Korean women from areas such as Busan and Jeju and linked to units serving in China, Philippines, and Pacific Islands; postwar controversies centered on documentation found in archives of the Japanese Ministry of Defense and testimony presented at tribunals including discussions related to the Tokyo Trials.

Transition to Liberation and Division (August 1945)

Japan's defeat in World War II and the Soviet invasion of Manchuria precipitated surrender in August 1945, leading to occupation of the peninsula: the Soviet Union in the north via forces advancing through Hamhung and Wonsan, and the United States in the south via Seoul and Incheon landings, formalized by arrangements influenced by the Yalta Conference and directives from leaders such as Joseph Stalin and Harry S. Truman. The abrupt collapse of colonial administration left power vacuums filled by local committees, returning exile politicians from the Provisional Government of the Republic of Korea, and emerging parties including the Korean Workers' Party and Korean Democratic Party, while negotiations over trusteeship and the 38th parallel demarcation foreshadowed the establishment of separate states: the Democratic People's Republic of Korea and the Republic of Korea, setting the stage for the Korean War and long-term Cold War alignments.

Category:Korea under Japanese rule