Maine–New Hampshire border

E32354

internationally recognized internal boundary state border

The Maine–New Hampshire border is the state boundary in the northeastern United States separating Maine and New Hampshire, much of it following the course of the Piscataqua River and other natural and surveyed lines.

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All labels observed (5)

Label	Occurrences
Maine–New Hampshire border canonical	4
New Hampshire state line	4
New Hampshire border	2
Maine state line	1
New Hampshire–Maine state line	1

How this entity was disambiguated

This entity first appeared as the object of triple T250274 — 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: Maine–New Hampshire border
Context triple: [New Hampshire state line at Gilead, Maine, partOf, Maine–New Hampshire border]

A. New York–Massachusetts border
The New York–Massachusetts border is the state line separating New York and Massachusetts, running through rural areas, small towns, and parts of the Berkshire and Taconic mountain regions in the northeastern United States.
B. Maine
Maine is a northeastern U.S. state known for its rugged coastline, maritime history, and vast forested interior.
C. New Hampshire
New Hampshire is a small New England state in the northeastern United States known for its mountainous landscapes, early presidential primary, and “Live Free or Die” motto.
D. Vermont
Vermont is a small, rural New England state in the northeastern United States, known for its Green Mountains, maple syrup production, and picturesque towns.
E. Cape Cod
Cape Cod is a hook-shaped peninsula in southeastern Massachusetts known for its sandy beaches, maritime villages, and popular summer tourism.
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: Maine–New Hampshire border
Target entity description: The Maine–New Hampshire border is the state boundary in the northeastern United States separating Maine and New Hampshire, much of it following the course of the Piscataqua River and other natural and surveyed lines.

A. New York–Massachusetts border
The New York–Massachusetts border is the state line separating New York and Massachusetts, running through rural areas, small towns, and parts of the Berkshire and Taconic mountain regions in the northeastern United States.
B. Maine
Maine is a northeastern U.S. state known for its rugged coastline, maritime history, and vast forested interior.
C. New Hampshire
New Hampshire is a small New England state in the northeastern United States known for its mountainous landscapes, early presidential primary, and “Live Free or Die” motto.
D. Vermont
Vermont is a small, rural New England state in the northeastern United States, known for its Green Mountains, maple syrup production, and picturesque towns.
E. Cape Cod
Cape Cod is a hook-shaped peninsula in southeastern Massachusetts known for its sandy beaches, maritime villages, and popular summer tourism.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	internationally recognized internal boundary ⓘ state border ⓘ
adjacentTo	Atlantic Ocean ⓘ
borderOf	Rockingham County, New Hampshire ⓘ Strafford County, New Hampshire ⓘ York County, Maine ⓘ
country	United States ⓘ linked to: United States of America
crossedBy	Interstate 95 ⓘ Memorial Bridge ⓘ Piscataqua River Bridge ⓘ Sarah Mildred Long Bridge ⓘ U.S. Route 1 ⓘ U.S. Route 2 ⓘ U.S. Route 302 ⓘ
demarcates	eastern boundary of New Hampshire ⓘ southwestern boundary of Maine ⓘ
establishedBy	colonial-era charters ⓘ
follows	Piscataqua River ⓘ natural features ⓘ surveyed lines ⓘ
governedBy	Maine state law ⓘ New Hampshire state law ⓘ
hasComponent	land boundary ⓘ maritime boundary ⓘ river boundary ⓘ
hasDispute	Maine–New Hampshire maritime boundary dispute ⓘ
hasHistoricalContext	colonial boundary between Province of Maine and Province of New Hampshire ⓘ
laterDefinedBy	federal court decisions ⓘ interstate compacts ⓘ
legalStatus	state boundary recognized by U.S. federal law ⓘ
locatedIn	New England ⓘ northeastern United States ⓘ linked to: Northeastern United States
mapFeatureClass	political boundary ⓘ
near	White Mountains region ⓘ linked to: White Mountains
orientation	roughly north–south ⓘ
partlyDefinedBy	Atlantic Ocean coastline ⓘ linked to: Atlantic coast of North America Piscataqua River ⓘ Salmon Falls River ⓘ
passesNear	Kittery, Maine ⓘ Portsmouth, New Hampshire ⓘ
separates	Maine ⓘ New Hampshire ⓘ
subjectTo	U.S. Supreme Court jurisdiction in boundary disputes ⓘ
usedFor	jurisdictional division ⓘ law enforcement jurisdiction ⓘ taxation jurisdiction ⓘ

How these facts were elicited