Gadsden Purchase agreement

E45922

bilateral treaty international treaty land purchase agreement

The Gadsden Purchase agreement was an 1853 treaty between the United States and Mexico in which the U.S. bought a strip of land in present-day southern Arizona and New Mexico to facilitate a southern transcontinental railroad and finalize the continental border.

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All labels observed (4)

Label	Occurrences
Gadsden Purchase	13
Gadsden Purchase agreement canonical	2
Gadsden Purchase Treaty	1
negotiate purchase of New Mexico territory	1

How this entity was disambiguated

This entity first appeared as the object of triple T359697 — 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: Gadsden Purchase agreement
Context triple: [U.S.–Mexico border, governedBy, Gadsden Purchase agreement]

A. Alaska Purchase
The Alaska Purchase was the 1867 transaction in which the United States bought the Alaska territory from the Russian Empire, significantly expanding U.S. land holdings in North America.
B. Louisiana Purchase
The Louisiana Purchase was an 1803 land deal in which the United States bought a vast territory from France, doubling the nation's size and securing control of the Mississippi River region.
C. Treaties of Velasco
The Treaties of Velasco were 1836 agreements between the newly independent Republic of Texas and captured Mexican president Antonio López de Santa Anna that sought to end hostilities after the Battle of San Jacinto and define Texas–Mexico relations.
D. 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.
E. Treaty of St. Louis (1804)
The Treaty of St. Louis (1804) was an agreement in which Sauk and Meskwaki leaders, under disputed circumstances, ceded vast lands in Illinois and Missouri to the United States, later fueling tensions that led to the Black Hawk War.
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: Gadsden Purchase agreement
Target entity description: The Gadsden Purchase agreement was an 1853 treaty between the United States and Mexico in which the U.S. bought a strip of land in present-day southern Arizona and New Mexico to facilitate a southern transcontinental railroad and finalize the continental border.

A. Alaska Purchase
The Alaska Purchase was the 1867 transaction in which the United States bought the Alaska territory from the Russian Empire, significantly expanding U.S. land holdings in North America.
B. Louisiana Purchase
The Louisiana Purchase was an 1803 land deal in which the United States bought a vast territory from France, doubling the nation's size and securing control of the Mississippi River region.
C. Treaties of Velasco
The Treaties of Velasco were 1836 agreements between the newly independent Republic of Texas and captured Mexican president Antonio López de Santa Anna that sought to end hostilities after the Battle of San Jacinto and define Texas–Mexico relations.
D. 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.
E. Treaty of St. Louis (1804)
The Treaty of St. Louis (1804) was an agreement in which Sauk and Meskwaki leaders, under disputed circumstances, ceded vast lands in Illinois and Missouri to the United States, later fueling tensions that led to the Black Hawk War.
F. None of above. chosen

Statements (41)

Predicate	Object
instanceOf	bilateral treaty ⓘ international treaty ⓘ land purchase agreement ⓘ
alsoKnownAs	Gadsden Purchase ⓘ linked to: Gadsden Purchase agreement Treaty of Mesilla ⓘ
appliesToRegion	southern Arizona ⓘ southern New Mexico ⓘ
areaTransferred	approximately 29570 square miles ⓘ
borderClarification	clarified boundary along the Rio Grande and the Gila River in the affected area ⓘ
category	1853 in international relations ⓘ 19th-century treaty of the United States ⓘ United States–Mexico relations ⓘ linked to: United States and Mexico
country1	United States ⓘ linked to: United States of America
country2	Mexico ⓘ
effectOnMexico	reduction of Mexican national territory ⓘ
effectOnUnitedStates	expansion of United States territory in the Southwest ⓘ
historicalContext	post–Mexican–American War territorial adjustment ⓘ
language	English ⓘ Spanish ⓘ
legalForm	treaty ⓘ
monetaryAmount	10000000 United States dollars ⓘ
namedAfter	James Gadsden ⓘ
predecessorEvent	Mexican–American War ⓘ
purchasedBy	United States ⓘ linked to: United States of America
purchasedFrom	Mexico ⓘ
purpose	to facilitate construction of a southern transcontinental railroad ⓘ to finalize the continental border between the United States and Mexico ⓘ to purchase a strip of land from Mexico ⓘ
ratificationYearUnitedStates	1854 ⓘ
ratifiedBy	Mexican government ⓘ linked to: Government of Mexico United States Senate ⓘ
relatedTo	United States–Mexico border ⓘ linked to: U.S.–Mexico border southern transcontinental railroad proposals ⓘ
result	United States acquired land in present-day southern Arizona ⓘ linked to: Southern Arizona United States acquired land in present-day southern New Mexico ⓘ linked to: United States territorial expansion established the modern United States–Mexico boundary in that region ⓘ
signedByRepresentativeOfMexico	Antonio López de Santa Anna ⓘ
signedByRepresentativeOfUnitedStates	James Gadsden ⓘ
signedIn	Mexico City ⓘ
signingDate	1853-12-30 ⓘ
signingYear	1853 ⓘ

How these facts were elicited