Mexican–American War

E7117

19th-century conflict war

The Mexican–American War was a mid-19th-century conflict between the United States and Mexico that resulted in significant territorial gains for the U.S., including present-day California, Arizona, New Mexico, and other southwestern lands.

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All labels observed (11)

Label	Occurrences
Mexican–American War canonical	316
Mexican War	1
Mexican–American War (1846–1848)	1
Mexican–American War (as U.S. Secretary of War)	1
Mexican–American War (as officer, limited service)	1
Mexican–American War (diplomatic prelude)	1
Mexican–American War aftermath	1
Mexican–American War prelude	1
U.S. declaration of war on Mexico	1
U.S. invasion of Mexico	1
United States invasion of Mexico	1

How this entity was disambiguated

This entity first appeared as the object of triple T45557 — 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: Mexican–American War
Context triple: [United States Marine Corps, engagedIn, Mexican–American War]

A. Spanish–American War
The Spanish–American War was an 1898 conflict between the United States and Spain that marked the emergence of the U.S. as a global power and led to American control over former Spanish colonies in the Caribbean and Pacific.
B. War of 1812
The War of 1812 was a military conflict between the United States and Great Britain from 1812 to 1815, marked by battles on land and sea, the burning of Washington, D.C., and a surge of American national identity.
C. American Civil War
The American Civil War was a major 19th-century conflict fought from 1861 to 1865 between the Northern Union states and the Southern Confederate states, primarily over slavery and states’ rights, that reshaped the political and social landscape of the United States.
D. Black Hawk War
The Black Hawk War was an 1832 conflict between the United States and a coalition of Native American tribes led by the Sauk leader Black Hawk, notable for involving future U.S. President Abraham Lincoln in his early military service.
E. Spanish conquest of the Aztec Empire
The Spanish conquest of the Aztec Empire was the early 16th-century military and political campaign led by Hernán Cortés that toppled the powerful Aztec civilization and brought central Mexico under Spanish colonial rule.
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: Mexican–American War
Target entity description: The Mexican–American War was a mid-19th-century conflict between the United States and Mexico that resulted in significant territorial gains for the U.S., including present-day California, Arizona, New Mexico, and other southwestern lands.

A. Spanish–American War
The Spanish–American War was an 1898 conflict between the United States and Spain that marked the emergence of the U.S. as a global power and led to American control over former Spanish colonies in the Caribbean and Pacific.
B. War of 1812
The War of 1812 was a military conflict between the United States and Great Britain from 1812 to 1815, marked by battles on land and sea, the burning of Washington, D.C., and a surge of American national identity.
C. American Civil War
The American Civil War was a major 19th-century conflict fought from 1861 to 1865 between the Northern Union states and the Southern Confederate states, primarily over slavery and states’ rights, that reshaped the political and social landscape of the United States.
D. Black Hawk War
The Black Hawk War was an 1832 conflict between the United States and a coalition of Native American tribes led by the Sauk leader Black Hawk, notable for involving future U.S. President Abraham Lincoln in his early military service.
E. Spanish conquest of the Aztec Empire
The Spanish conquest of the Aztec Empire was the early 16th-century military and political campaign led by Hernán Cortés that toppled the powerful Aztec civilization and brought central Mexico under Spanish colonial rule.
F. None of above. chosen

Statements (54)

Predicate	Object
instanceOf	19th-century conflict ⓘ war ⓘ
aftermath	intensified U.S. sectional conflict over slavery expansion ⓘ significant Mexican territorial loss ⓘ strengthening of U.S. military leaders who later served in the American Civil War ⓘ
belligerent	Mexico ⓘ United States of America ⓘ surface form: United States
capitalCaptured	Mexico City ⓘ
cause	U.S. expansionist ideology of Manifest Destiny ⓘ annexation of Texas by the United States ⓘ dispute over the Texas–Mexico border ⓘ
conflictBetween	Mexico ⓘ United States of America ⓘ surface form: United States
endDate	1848-02-02 ⓘ
legislativeAuthorization	U.S. Congress declaration of war on Mexico ⓘ
location	California, United States ⓘ surface form: California Mexico ⓘ New Mexico Territory ⓘ North America ⓘ Texas ⓘ present-day southwestern United States ⓘ
majorBattle	Battle of Buena Vista ⓘ Battle of Cerro Gordo ⓘ Battle of Chapultepec ⓘ Battle of Monterrey ⓘ Battle of Palo Alto ⓘ Battle of Resaca de la Palma ⓘ Siege of Veracruz ⓘ
MexicanCommander	Antonio López de Santa Anna ⓘ Gabriel Valencia ⓘ Mariano Arista ⓘ
MexicanPresidentDuringWar	Antonio López de Santa Anna ⓘ
predecessorConflict	Texas Revolution ⓘ
result	decisive United States victory ⓘ
startDate	1846-04-25 ⓘ
territorialChange	Treaty of Guadalupe Hidalgo ⓘ surface form: Mexican Cession to the United States U.S. acquisition of most of present-day Arizona ⓘ U.S. acquisition of most of present-day New Mexico ⓘ U.S. acquisition of parts of present-day Colorado ⓘ U.S. acquisition of parts of present-day Wyoming ⓘ U.S. acquisition of present-day California ⓘ U.S. acquisition of present-day Nevada ⓘ U.S. acquisition of present-day Utah ⓘ
treaty	Treaty of Guadalupe Hidalgo ⓘ
treatySignedAt	Treaty of Guadalupe Hidalgo ⓘ surface form: Guadalupe Hidalgo
treatySignedOn	1848-02-02 ⓘ
U.S.Commander	Stephen W. Kearny ⓘ Winfield Scott ⓘ Zachary Taylor ⓘ
U.S.MilitaryTheater	California Campaign ⓘ Central Mexico ⓘ New Mexico Campaign ⓘ Northern Mexico ⓘ
U.S.PresidentDuringWar	James K. Polk ⓘ

How these facts were elicited

Referenced by (326)

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

United States Marine Corps → engagedIn → Mexican–American War ⓘ

Legislature of California under Mexican rule → endCause → Mexican–American War ⓘ

Robert E. Lee → servedIn → Mexican–American War ⓘ

Civil Disobedience → criticizes → Mexican–American War ⓘ

Stonewall Jackson → militaryConflict → Mexican–American War ⓘ

Jefferson Davis → participantIn → Mexican–American War ⓘ

William Tecumseh Sherman → servedIn → Mexican–American War ⓘ

Compromise of 1850 → followed → Mexican–American War ⓘ

southwestern United States → historicalEvent → Mexican–American War ⓘ

subject surface form: Southwestern United States

James Longstreet → conflict → Mexican–American War ⓘ

Marines' Hymn → influencedBy → Mexican–American War ⓘ

United States Revenue Cutter Service → notableConflict → Mexican–American War ⓘ

Winfield Scott → participantIn → Mexican–American War ⓘ

Winfield Scott → conflict → Mexican–American War ⓘ

Ulysses S. Grant → warParticipatedIn → Mexican–American War ⓘ

Samuel Francis Du Pont → participatedIn → Mexican–American War ⓘ

Mexican Alta California → significantEvent → Mexican–American War ⓘ

Texas Revolution → followedBy → Mexican–American War ⓘ

United States Volunteers → raisedDuring → Mexican–American War ⓘ

United States Volunteers → notableConflict → Mexican–American War ⓘ

Kit Carson → conflict → Mexican–American War ⓘ

United States Ordnance Department → conflictInvolved → Mexican–American War ⓘ

Admiral David Farragut → conflict → Mexican–American War ⓘ

subject surface form: David Farragut

military governor Bennet C. Riley → conflict → Mexican–American War ⓘ

subject surface form: Bennet C. Riley

Californios → significantEvent → Mexican–American War ⓘ

Jefferson Barracks, Missouri → usedDuring → Mexican–American War ⓘ

United States territorial expansion → significantEvent → Mexican–American War ⓘ

Stonewall → servedIn → Mexican–American War ⓘ

subject surface form: Stonewall Jackson

The Biglow Papers → criticizes → Mexican–American War ⓘ

Monument to the Niños Héroes (nearby Chapultepec access) → commemoratesConflict → Mexican–American War ⓘ

Monument to the Niños Héroes (nearby Chapultepec access) → memorializesDeathsDuring → Mexican–American War ⓘ

this entity surface form: U.S. invasion of Mexico

Antonio López de Santa Anna → participatedIn → Mexican–American War ⓘ

Gadsden Purchase agreement → predecessorEvent → Mexican–American War ⓘ

Antebellum period → significantEvent → Mexican–American War ⓘ

3rd U.S. Infantry Regiment (The Old Guard) → battleHonors → Mexican–American War ⓘ

Altar a la Patria → commemorates → Mexican–American War ⓘ

Treaty of Guadalupe Hidalgo → endedConflict → Mexican–American War ⓘ

this entity surface form: Mexican War

Mexican Americans → hasHistoricalEvent → Mexican–American War ⓘ

Braxton Bragg → conflict → Mexican–American War ⓘ

Battle of Palo Alto → partOf → Mexican–American War ⓘ

Battle of Palo Alto → conflict → Mexican–American War ⓘ

California Campaign → conflict → Mexican–American War ⓘ

California Campaign → partOf → Mexican–American War ⓘ

Chapultepec Castle → significantEvent → Mexican–American War ⓘ

Battle of Buena Vista → conflictOf → Mexican–American War ⓘ

Battle of Buena Vista → partOf → Mexican–American War ⓘ

Battle of Cerro Gordo → conflictOf → Mexican–American War ⓘ

Battle of Cerro Gordo → partOf → Mexican–American War ⓘ

Monument to the Niños Héroes → commemoratesConflict → Mexican–American War ⓘ

All labels observed (11)

How this entity was disambiguated Show

Statements (54)

How these facts were elicited Show

Referenced by (326)

How this entity was disambiguated

How these facts were elicited