Representatives of Imperial Japan and the Korean Empire signed the Japan–Korea Annexation Treaty, setting the legal basis (as asserted by Japan at the time) for incorporation of Korea into the Japanese Empire; the treaty’s legitimacy has long been contested in Korean historiography and politics.
Japan proclaimed the annexation of Korea; Japanese imperial ordinances issued the same day provided for establishing the Government-General in Chōsen (Korea) as the core colonial governing apparatus.
Following annexation, the Government-General commenced a peninsula-wide land survey and cadastral mapping program; regulations were codified in September 1910 and the survey became foundational to colonial taxation, land tenure documentation, and agrarian restructuring.
The colonial Governor-General of Chōsen position and the Government-General’s rule are generally dated to the start of October 1910, replacing the earlier Resident-General system and consolidating executive, police, and (in practice) military authority in the governor-generalship.
Mass demonstrations for Korean independence began in Seoul and spread nationwide after the public reading of a proclamation of independence; Japanese authorities suppressed the protests with large-scale arrests and violence, reshaping both colonial governance and Korean resistance.
Korean independence leaders established a government-in-exile in Shanghai in reaction to the suppression of the March First Movement, aiming to coordinate diplomacy, propaganda, and armed resistance networks abroad.
Korean independence forces fought Japanese troops over multiple engagements in the Qingshanli (Cheongsanri) area of Manchuria, an episode widely remembered in Korea as a major armed resistance success during the colonial period.
Student-led protests coincided with the state funeral of former emperor Sunjong in Seoul, with demonstrators distributing leaflets and shouting for independence; colonial police rapidly suppressed the action and arrested participants.
Singanhoe (New Trunk Association) formed as a major legal mass organization that sought to bridge nationalist and socialist currents, building a large membership and regional branches while campaigning against colonial repression and discrimination.
A student protest movement ignited in Gwangju and spread widely, becoming one of the largest anti-colonial mobilizations after 1919; it reflected both educational discrimination and broader resistance to Japanese rule.
Japan’s State General Mobilization Law created broad powers for total-war economic and labor controls across the empire; it underpinned later intensification of mobilization policies affecting colonial Korea as the war expanded.
Korean independence activists organized the Korean Volunteer Corps in Wuhan/Hankou as an anti-Japanese force aligned with broader Chinese wartime resistance, later interacting with other Korean exile military formations.
Colonial authorities issued regulations (1939–1940) that pressured Koreans to adopt Japanese-style family names (and permitted given-name changes), a key component of late-colonial assimilation policies and social control.
Japanese police began mass arrests of members of the Korean Language Society, targeting scholars involved in Korean-language research and dictionary work; the incident is remembered as a major crackdown tied to late-colonial cultural suppression.
A Korean branch of the Women’s Volunteer Corps was created under Japan’s wartime labor regime; despite “volunteer” terminology, it functioned as a system to compel women into labor duties amid intensifying total-war mobilization.
Japan’s surrender ended 35 years of colonial rule on the peninsula; August 15 is commemorated in both Koreas as liberation day (Gwangbokjeol / Liberation of the Fatherland Day).
Annexation of Korea and Japanese colonial administration on the peninsula (1910-1945)
