Mason–Dixon Line

E21202

The Mason–Dixon Line is the historic boundary surveyed in the 18th century between several American colonies that later came to symbolize the cultural and political divide between the Northern and Southern United States.

AI illustration

How this image was made

AI-generated illustration of Mason–Dixon Line

This AI-generated illustration was produced by black-forest-labs/FLUX.2-dev (1024x1024) from a prompt written by openai/gpt-oss-120b from the entity's label + description.

Prompt

Generate an image of the Mason–Dixon Line (The Mason–Dixon Line is the historic boundary surveyed in the 18th century between several American colonies that later came to symbolize the cultural and political divide between the Northern and Southern United States.)

All labels observed (5)

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf historical boundary ⓘ
surveyed border line ⓘ
alsoKnownAs Mason and Dixon line ⓘ
linked to: Mason–Dixon Line
approximateLength about 233 miles ⓘ
associatedWith American Civil War era regional divisions ⓘ
slavery in the United States ⓘ
completedIn 1767 ⓘ
coordinateSystemUsed celestial observations ⓘ
country United States ⓘ
definedBy agreement between the Penn family and the Calvert family ⓘ
endPoint near the crest of the Appalachian Mountains ⓘ
followsParallel 39th parallel north (approximate) ⓘ
hasHeritageStatus listed on the U.S. National Register of Historic Places (in parts) ⓘ
historicalEra 18th century ⓘ
influenced later U.S. state boundary definitions ⓘ
legalStatus colonial boundary line ⓘ
locatedIn Eastern United States ⓘ
markedBy crownstones with family coats of arms ⓘ
stone markers ⓘ
namedAfter Charles Mason ⓘ
Jeremiah Dixon ⓘ
linked to: Charles Mason
partOf borders of Delaware ⓘ
borders of Maryland ⓘ
borders of Pennsylvania ⓘ
borders of West Virginia ⓘ
precededBy earlier, disputed colonial boundary claims ⓘ
purpose to resolve a border dispute between Pennsylvania and Maryland ⓘ
region Mid-Atlantic United States ⓘ
linked to: Mid-Atlantic states
separates Delaware ⓘ
Maryland ⓘ
Maryland and Delaware ⓘ
Maryland and Pennsylvania ⓘ
Maryland and West Virginia ⓘ
Pennsylvania ⓘ
West Virginia ⓘ
startPoint near the Delaware River ⓘ
surveyedFor British Crown colonies in North America ⓘ
Province of Maryland ⓘ
linked to: Colony of Maryland

Province of Pennsylvania ⓘ
surveyEndYear 1767 ⓘ
surveyMethod astronomical surveying ⓘ
chain measurement ⓘ
surveyor Charles Mason ⓘ
Jeremiah Dixon ⓘ
linked to: Charles Mason
surveyStartYear 1763 ⓘ
symbolizes boundary between Northern United States and Southern United States ⓘ
cultural divide in the United States ⓘ
political divide in the United States ⓘ

How these facts were elicited

Referenced by (22)

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

Gettysburg, Pennsylvania → near → Mason–Dixon Line ⓘ
Mason–Dixon Line → alsoKnownAs → Mason and Dixon line ⓘ
linked to: Mason–Dixon Line
Mason & Dixon → subject → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Colony of Maryland → borderDefinedBy → Mason–Dixon Line ⓘ
Hagerstown–Martinsburg, MD–WV Metropolitan Statistical Area → locatedNear → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Blue Ridge Summit, Pennsylvania → locatedNear → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Charles Mason → notableWork → Mason–Dixon Line survey ⓘ
linked to: Mason–Dixon Line
Charles Mason → legacy → Mason–Dixon Line later associated with cultural boundary between U.S. North and South ⓘ
linked to: Mason–Dixon Line
Youghiogheny River → crosses → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Hagerstown Valley → locatedNear → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Pen Mar, Maryland → locatedOn → Mason–Dixon Line ⓘ
Jeremiah Dixon → knownFor → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Maryland proprietors → relatedTo → Mason–Dixon Line ⓘ
Emmitsburg, Maryland → locatedNear → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Pennsylvania border → partlyDefinedBy → Mason–Dixon Line ⓘ
Youghiogheny River → crosses → Mason–Dixon line ⓘ
subject linked to: Yough River
linked to: Mason–Dixon Line
Maryland state line → definedBy → Mason–Dixon Line ⓘ
Pennsylvania–Delaware border → relatedTo → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Great Allegheny Passage → crosses → Mason–Dixon Line ⓘ
subject linked to: GAP
Antrim Township, Pennsylvania → near → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line
Sailing to Philadelphia → refersTo → Mason–Dixon line ⓘ
linked to: Mason–Dixon Line