Treaty of Portsmouth

E64374

bilateral treaty international treaty peace treaty

The Treaty of Portsmouth was the 1905 peace agreement, mediated by U.S. President Theodore Roosevelt in New Hampshire, that ended the Russo-Japanese War and marked Japan’s emergence as a major world power.

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All labels observed (3)

Label	Occurrences
Treaty of Portsmouth canonical	9
Russo-Japanese War peace negotiations	1
Russo-Japanese territorial negotiations	1

How this entity was disambiguated

This entity first appeared as the object of triple T516982 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Treaty of Portsmouth
Context triple: [Russo-Japanese War, treaty, Treaty of Portsmouth]

A. Treaty of Ghent
The Treaty of Ghent was the 1814 peace agreement between the United States and Great Britain that ended the War of 1812 and largely restored relations and territorial boundaries to their prewar status.
B. Treaty of Brest-Litovsk
The Treaty of Brest-Litovsk was a 1918 peace agreement in which Bolshevik Russia exited World War I by ceding vast territories to the Central Powers, profoundly reshaping Eastern Europe and influencing the course of the Russian Civil War.
C. Treaty of San Francisco
The Treaty of San Francisco was the 1951 peace treaty between Japan and most Allied nations that officially ended World War II hostilities with Japan and restored its sovereignty.
D. Treaty of Shimonoseki
The Treaty of Shimonoseki was an 1895 peace agreement between Qing China and Japan that ended the First Sino-Japanese War and marked Japan’s emergence as a major imperial power in East Asia.
E. A Revision of the Treaty
A Revision of the Treaty is John Maynard Keynes’s 1922 follow-up work to The Economic Consequences of the Peace, in which he further critiques and proposes modifications to the post–World War I peace settlement.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Treaty of Portsmouth
Target entity description: The Treaty of Portsmouth was the 1905 peace agreement, mediated by U.S. President Theodore Roosevelt in New Hampshire, that ended the Russo-Japanese War and marked Japan’s emergence as a major world power.

A. Treaty of Ghent
The Treaty of Ghent was the 1814 peace agreement between the United States and Great Britain that ended the War of 1812 and largely restored relations and territorial boundaries to their prewar status.
B. Treaty of Brest-Litovsk
The Treaty of Brest-Litovsk was a 1918 peace agreement in which Bolshevik Russia exited World War I by ceding vast territories to the Central Powers, profoundly reshaping Eastern Europe and influencing the course of the Russian Civil War.
C. Treaty of San Francisco
The Treaty of San Francisco was the 1951 peace treaty between Japan and most Allied nations that officially ended World War II hostilities with Japan and restored its sovereignty.
D. Treaty of Shimonoseki
The Treaty of Shimonoseki was an 1895 peace agreement between Qing China and Japan that ended the First Sino-Japanese War and marked Japan’s emergence as a major imperial power in East Asia.
E. A Revision of the Treaty
A Revision of the Treaty is John Maynard Keynes’s 1922 follow-up work to The Economic Consequences of the Peace, in which he further critiques and proposes modifications to the post–World War I peace settlement.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	bilateral treaty ⓘ international treaty ⓘ peace treaty ⓘ
articleCount	15 articles ⓘ
brokeredBy	United States ⓘ linked to: United States of America
category	1905 in international relations ⓘ Treaties of the Empire of Japan ⓘ Treaties of the Russian Empire ⓘ
concludedOn	1905-09-05 ⓘ
countrySignatory	Empire of Japan ⓘ linked to: Japan Russian Empire ⓘ
endedConflict	Russo-Japanese War ⓘ
followedBy	Japan–Korea Treaty of 1905 ⓘ
grantedTerritory	southern half of Sakhalin Island to Japan ⓘ
historicalEra	Meiji period ⓘ linked to: Meiji era late Russian Empire ⓘ
hostCity	Portsmouth ⓘ
hostState	New Hampshire ⓘ
language	English ⓘ French ⓘ
ledTo	Nobel Peace Prize for Theodore Roosevelt ⓘ linked to: Nobel Peace Prize
mediatedBy	Theodore Roosevelt ⓘ
namedAfter	Portsmouth, New Hampshire ⓘ
negotiationVenue	Kittery, Maine ⓘ Portsmouth Naval Shipyard ⓘ
NobelPrizeYear	1906 ⓘ
precededBy	Treaty of Shimonoseki ⓘ
protocolCount	3 protocols ⓘ
recognizedControl	Japan’s control of the South Manchurian Railway ⓘ Japan’s lease of the Liaodong Peninsula ⓘ Japan’s paramount interests in Korea ⓘ
region	New England ⓘ
requiredWithdrawal	Japanese troops from Manchuria ⓘ Russian troops from Manchuria ⓘ
resultedIn	Japan’s emergence as a major world power ⓘ end of Russian expansion in East Asia ⓘ international prestige for Theodore Roosevelt ⓘ strengthening of Japanese influence in Korea ⓘ
signatoryRepresentative	Komura Jutarō ⓘ Roman Rosen ⓘ Sergei Witte ⓘ Takahira Kogorō ⓘ
signedIn	Portsmouth, New Hampshire ⓘ
signedOn	1905-09-05 ⓘ
stipulated	restoration of Manchuria to Chinese administration ⓘ
subjectMatter	end of hostilities between Russia and Japan ⓘ territorial adjustments in East Asia ⓘ
treatyLocationCountry	United States ⓘ linked to: United States of America
treatySignedYear	1905 ⓘ
warIndemnity	no monetary indemnity paid by Russia to Japan ⓘ

How these facts were elicited

Referenced by (11)

Full triples — surface form annotated when it differs from this entity's canonical label.

Russo-Japanese War → treaty → Treaty of Portsmouth ⓘ

Battle of Tsushima → treatyConsequence → Treaty of Portsmouth ⓘ

Kwantung Leased Territory → legalBasis → Treaty of Portsmouth ⓘ

Sakhalin Island → historicalTreaty → Treaty of Portsmouth ⓘ

Treaty of Shimoda → precedes → Treaty of Portsmouth ⓘ

Russo–American relations → includesAgreement → Treaty of Portsmouth ⓘ

Southern Kurils → subjectOf → Russo-Japanese territorial negotiations ⓘ

linked to: Treaty of Portsmouth

Sergei Witte → signed → Treaty of Portsmouth ⓘ

Soviet occupation of southern Sakhalin → relatedTo → Treaty of Portsmouth ⓘ

Karafuto Prefecture → legalBasis → Treaty of Portsmouth ⓘ

Takahira Kogorō → participantIn → Russo-Japanese War peace negotiations ⓘ