Japan–Korea Treaty of 1910

Japan–Korea Treaty of 1910
Sunjong of Korean Empire · Public domain · source
Name	Empire of Japan–Korean Empire Annexation Treaty
Caption	Flags of Empire of Japan and Korean Empire
Date signed	22 August 1910
Location	Seoul
Signatories	Emperor Meiji, Sunjong of Korea

Japan–Korea Treaty of 1910 was the instrument by which the Empire of Japan completed the formal annexation of the Korean Empire into the Empire of Japan on 22 August 1910. The treaty concluded a sequence of earlier agreements including the Treaty of Ganghwa (1876), the Japan–Korea Treaty of 1905, and the Japan–Korea Treaty of 1907, consolidating authority exercised by the Resident-General of Korea and officials such as Itō Hirobumi and Terauchi Masatake. The annexation precipitated administrative changes in Seoul, sparked resistance led by figures like Syngman Rhee and Kim Kyu-sik, and influenced diplomacy involving Great Britain, United States, Russia, and the Taft–Katsura Agreement milieu.

Background

The treaty followed decades of changing relations after the Ganghwa Island incident (1875) and the Treaty of Amity and Commerce (Japan–Korea) impulses, as rivalry among Qing dynasty, Joseon dynasty, Empire of Japan, and Russian Empire culminated in the First Sino-Japanese War and the Russo-Japanese War (1904–1905). The Treaty of Portsmouth and the subsequent Eulsa Treaty (1905) established Japan–Korea relations under Japanese supervision, with Ito Hirobumi serving as Resident-General of Korea and Terauchi Masatake later appointed as Governor-General of Korea. Imperial policies were influenced by doctrines asserted at the Treaty of Shimonoseki, precedents like the Ansei Treaties, and strategic aims discussed among leaders such as Emperor Meiji, Ito Hirobumi, Yamagata Aritomo, and Baron Hayashi Gonsuke.

Negotiation and Signing

Negotiations occurred after the resignation of Ito Hirobumi and during Terauchi Masatake's governorship, with Japanese plenipotentiaries including Matsui Keishirō and Korean signatories including officials appointed under the Eulsa Treaty. The process built on prior instruments such as the Japan–Korea Protectorate Treaty framework, and on diplomatic understandings influenced by the Anglo-Japanese Alliance and Taft–Katsura Agreement contexts. The signing in Seoul involved Japanese representatives and coerced assent from Sunjong of Korea and ministers within the Korean Empire court, following protocols shaped by precedents like the Convention of Kanagawa and the Treaty of Kanghwa.

Terms and Legal Effects

The treaty declared that the Korean Empire would be annexed to the Empire of Japan and that His Majesty the Emperor of Japan would exercise sovereignty over Korea, effectively abrogating the Korean Empire's international personality recognized under instruments such as the Treaty of Ganghwa (1876). It incorporated provisions transferring administration, property, and jurisdiction to Japanese authorities, organized in structures akin to those found in the Governor-General of Taiwan administration after the First Sino-Japanese War. The document referenced imperial prerogatives comparable to those in the Treaty of Portsmouth outcomes and raised questions later addressed by legal scholars referencing international law debates involving the Hague Convention (1899) and principles articulated in precedents like the Alabama Claims adjudications.

Implementation and Administration

Following annexation, Terauchi Masatake and successive Governor-General of Korea officials instituted colonial governance, land surveys, and police systems influenced by administrators who had served in Formosa and Taiwan administrations, deploying cadres connected to Home Ministry (Japan) and Ministry of Colonial Affairs (Japan). Infrastructure projects tied to the Chōsen Railway Company, Keijo Imperial University, and public works paralleled investments seen under Governor-General rule in other Japanese possessions. Policies on language and ritual affected institutions like Gyungbokgung and religious sites, intersecting with modernization efforts framed by advisors from Ministry of Education (Japan), engineers trained in Imperial Japanese Army or Imperial Japanese Navy academies, and businessmen from conglomerates such as Mitsubishi and Mitsui.

Korean Response and Resistance

Domestic opposition included political leaders such as Syngman Rhee, activists like Yu Gwan-sun, and groups including the Korean National Association and the Righteous Army (Korean independence movement), which organized protests, petitions, and uprisings culminating in events such as the March 1st Movement (1919). Exiled communities in Shanghai, Harbin, and Hawaii formed organizations like the Provisional Government of the Republic of Korea and engaged with international actors including delegations to the Paris Peace Conference (1919) and appeals to the League of Nations. Cultural resistance involved preservation of Hangul and nationalist historiography by scholars such as Park Eun-sik and Ahn Chang-ho, while armed resistance connected to guerrilla leaders like Kim Il-sung in later decades.

International Reaction and Aftermath

Major powers such as Great Britain, United States, and Germany recognized Japan's position through diplomatic practice shaped by the Anglo-Japanese Alliance and strategic settlements like the Taft–Katsura Agreement, while the Russian Empire's defeat in 1905 reduced its capacity to contest annexation. The annexation influenced colonial rearrangements in East Asia, affected negotiations at forums such as the Washington Naval Conference (1921–1922), and shaped postwar settlements leading to occupation policies after World War II. Legal and historical debates over the treaty persisted into the 20th century and informed bilateral relations between Japan and Korea during the Korean War era and in diplomatic accords such as the Treaty on Basic Relations between Japan and the Republic of Korea (1965), and remain central to contemporary discussions in institutions like the International Court of Justice and academic fields studying imperialism.

Category:1910 treaties Category:Annexation