Heligoland–Zanzibar Treaty of 1890

E306745

bilateral treaty colonial treaty international agreement

The Heligoland–Zanzibar Treaty of 1890 was an agreement between the German Empire and the United Kingdom that redefined their colonial spheres of influence in Africa, notably granting Germany control of Heligoland in exchange for recognizing British dominance in Zanzibar and other territories.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (5)

Label	Occurrences
Heligoland–Zanzibar Treaty	2
Anglo–German Agreement of 1890	1
Anglo–German colonial negotiations	1
Heligoland–Zanzibar Treaty 1890	1
Heligoland–Zanzibar Treaty of 1890 canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T2888476 — 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: Heligoland–Zanzibar Treaty of 1890
Context triple: [Helgoland, historicalEvent, Heligoland–Zanzibar Treaty of 1890]

A. Anglo-Russian Convention of 1907
The Anglo-Russian Convention of 1907 was a diplomatic agreement between the British and Russian Empires that settled their rival territorial claims in Persia, Afghanistan, and Tibet, helping to ease tensions and pave the way for their alliance in World War I.
B. Treaty of Kiel
The Treaty of Kiel was an 1814 peace agreement that ended the union between Denmark and Norway by ceding Norway to Sweden, setting the stage for Norway’s subsequent struggle for independence and constitution.
C. Treaty of 23 December 1865
The Treaty of 23 December 1865 was the international agreement through which several European states standardized their coinage systems, laying the foundation for the Latin Monetary Union.
D. London Convention of 1871
The London Convention of 1871 was an international agreement that revised key provisions of the Treaty of Paris (1856), notably allowing Russia to remilitarize the Black Sea and reshaping the balance of power in Eastern Europe.
E. Svalbard Treaty
The Svalbard Treaty is a 1920 international agreement that recognizes Norway’s sovereignty over the Svalbard archipelago while granting other signatory states equal rights to engage in commercial activities there and imposing demilitarization.
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: Heligoland–Zanzibar Treaty of 1890
Target entity description: The Heligoland–Zanzibar Treaty of 1890 was an agreement between the German Empire and the United Kingdom that redefined their colonial spheres of influence in Africa, notably granting Germany control of Heligoland in exchange for recognizing British dominance in Zanzibar and other territories.

A. Anglo-Russian Convention of 1907
The Anglo-Russian Convention of 1907 was a diplomatic agreement between the British and Russian Empires that settled their rival territorial claims in Persia, Afghanistan, and Tibet, helping to ease tensions and pave the way for their alliance in World War I.
B. Treaty of Kiel
The Treaty of Kiel was an 1814 peace agreement that ended the union between Denmark and Norway by ceding Norway to Sweden, setting the stage for Norway’s subsequent struggle for independence and constitution.
C. Treaty of 23 December 1865
The Treaty of 23 December 1865 was the international agreement through which several European states standardized their coinage systems, laying the foundation for the Latin Monetary Union.
D. London Convention of 1871
The London Convention of 1871 was an international agreement that revised key provisions of the Treaty of Paris (1856), notably allowing Russia to remilitarize the Black Sea and reshaping the balance of power in Eastern Europe.
E. Svalbard Treaty
The Svalbard Treaty is a 1920 international agreement that recognizes Norway’s sovereignty over the Svalbard archipelago while granting other signatory states equal rights to engage in commercial activities there and imposing demilitarization.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	bilateral treaty ⓘ colonial treaty ⓘ international agreement ⓘ
alsoKnownAs	Heligoland–Zanzibar Treaty of 1890 ⓘ surface form: Anglo–German Agreement of 1890 Heligoland–Zanzibar Treaty of 1890 ⓘ surface form: Heligoland–Zanzibar Treaty
category	1890 in international relations ⓘ Treaties of the German Empire ⓘ Treaties of the United Kingdom ⓘ
countrySignatory	German Empire ⓘ United Kingdom of Great Britain and Ireland ⓘ
dateSigned	1890-07-01 ⓘ
definedBoundaryBetween	British East Africa ⓘ German East Africa ⓘ
definedBoundaryRegion	Cameroon region ⓘ East Africa ⓘ Namibia ⓘ surface form: Southwest Africa Togoland region ⓘ
effectOnCapriviStrip	created Caprivi Strip as part of German South West Africa ⓘ
effectOnHeligoland	transferred sovereignty from United Kingdom to German Empire ⓘ
effectOnZanzibar	confirmed British predominance over Zanzibar ⓘ
grantedTerritory	Caprivi Strip ⓘ Helgoland ⓘ surface form: Heligoland parts of German East Africa ⓘ
grantedTerritoryTo	German Empire ⓘ
historicalPeriod	late 19th century ⓘ
influenced	subsequent Anglo–German relations in Africa ⓘ
legalStatus	entered into force in 1890 ⓘ
locationSigned	Berlin ⓘ
negotiatedBy	Foreign and Commonwealth Office ⓘ surface form: British Foreign Office German Foreign Office ⓘ surface form: German Empire foreign office
partOf	Scramble for Africa ⓘ
politicalContext	European colonial rivalry in Africa ⓘ
primaryLanguage	English ⓘ German ⓘ
recognizedSphereOfInfluence	British East Africa ⓘ surface form: British Empire in East Africa British Empire in Kenya region ⓘ British Protectorate of Uganda ⓘ surface form: British Empire in Uganda Sultanate of Zanzibar ⓘ surface form: British Empire in Zanzibar British Empire in Zanzibar Sultanate ⓘ
relatedTo	British East Africa ⓘ surface form: British East Africa Protectorate Caprivi Strip ⓘ German East Africa ⓘ Namibia ⓘ surface form: German South West Africa Sultanate of Zanzibar ⓘ surface form: Zanzibar Sultanate
signedUnderMonarch	Queen Victoria ⓘ Wilhelm II, German Emperor ⓘ surface form: Wilhelm II
subjectOf	Heligoland–Zanzibar Treaty of 1890 self-linksurface differs ⓘ surface form: Anglo–German colonial negotiations
yearSigned	1890 ⓘ

How these facts were elicited

Referenced by (6)

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

Helgoland → historicalEvent → Heligoland–Zanzibar Treaty of 1890 ⓘ

Heligoland–Zanzibar Treaty of 1890 → alsoKnownAs → Heligoland–Zanzibar Treaty of 1890 ⓘ

this entity surface form: Heligoland–Zanzibar Treaty

Heligoland–Zanzibar Treaty of 1890 → alsoKnownAs → Heligoland–Zanzibar Treaty of 1890 ⓘ

this entity surface form: Anglo–German Agreement of 1890

Heligoland–Zanzibar Treaty of 1890 → subjectOf → Heligoland–Zanzibar Treaty of 1890 self-linksurface differs ⓘ

this entity surface form: Anglo–German colonial negotiations

Sultanate of Zanzibar → treaty → Heligoland–Zanzibar Treaty of 1890 ⓘ

this entity surface form: Heligoland–Zanzibar Treaty

Sultanate of Zanzibar → yearOf → Heligoland–Zanzibar Treaty of 1890 ⓘ

this entity surface form: Heligoland–Zanzibar Treaty 1890

All labels observed (5)

How this entity was disambiguated Show

Statements (48)

How these facts were elicited Show

Referenced by (6)

How this entity was disambiguated

How these facts were elicited