Mexican oil expropriation of 1938
E909101
The Mexican oil expropriation of 1938 was a landmark nationalization of foreign-owned oil companies by President Lázaro Cárdenas that asserted Mexico’s control over its petroleum resources and reshaped its economic and political landscape.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mexican oil expropriation of 1938 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11156661 — 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 oil expropriation of 1938 Context triple: [Lázaro Cárdenas del Río, notableWork, Mexican oil expropriation of 1938]
-
A.
United States occupation of Veracruz in 1914
The United States occupation of Veracruz in 1914 was a World War I–era intervention in Mexico in which U.S. forces seized the strategic Gulf Coast city to prevent a German arms shipment from reaching the government of Victoriano Huerta.
-
B.
Mexican Revolution
The Mexican Revolution was a major early 20th-century social and political upheaval in Mexico that overthrew the longstanding dictatorship of Porfirio Díaz and reshaped the nation’s land, labor, and governance structures.
-
C.
Santa Anna dictatorship
The Santa Anna dictatorship refers to the authoritarian rule of Mexican leader Antonio López de Santa Anna in the mid-19th century, marked by centralization of power, political repression, and instability that helped set the stage for the liberal reforms of La Reforma.
-
D.
Zapata Plan
The Zapata Plan was the U.S. Central Intelligence Agency’s covert operation to organize, train, and support Cuban exiles in the failed 1961 Bay of Pigs invasion aimed at overthrowing Fidel Castro’s government.
-
E.
French intervention in Mexico
The French intervention in Mexico was a mid-19th-century military campaign in which France, backed at times by Britain and Spain, invaded Mexico to install Emperor Maximilian I and challenge Mexican sovereignty under President Benito Juárez.
- 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 oil expropriation of 1938 Target entity description: The Mexican oil expropriation of 1938 was a landmark nationalization of foreign-owned oil companies by President Lázaro Cárdenas that asserted Mexico’s control over its petroleum resources and reshaped its economic and political landscape.
-
A.
United States occupation of Veracruz in 1914
The United States occupation of Veracruz in 1914 was a World War I–era intervention in Mexico in which U.S. forces seized the strategic Gulf Coast city to prevent a German arms shipment from reaching the government of Victoriano Huerta.
-
B.
Mexican Revolution
The Mexican Revolution was a major early 20th-century social and political upheaval in Mexico that overthrew the longstanding dictatorship of Porfirio Díaz and reshaped the nation’s land, labor, and governance structures.
-
C.
Santa Anna dictatorship
The Santa Anna dictatorship refers to the authoritarian rule of Mexican leader Antonio López de Santa Anna in the mid-19th century, marked by centralization of power, political repression, and instability that helped set the stage for the liberal reforms of La Reforma.
-
D.
Zapata Plan
The Zapata Plan was the U.S. Central Intelligence Agency’s covert operation to organize, train, and support Cuban exiles in the failed 1961 Bay of Pigs invasion aimed at overthrowing Fidel Castro’s government.
-
E.
French intervention in Mexico
The French intervention in Mexico was a mid-19th-century military campaign in which France, backed at times by Britain and Spain, invaded Mexico to install Emperor Maximilian I and challenge Mexican sovereignty under President Benito Juárez.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
historical event
ⓘ
nationalization ⓘ |
| appliesToJurisdiction | United Mexican States NERFINISHED ⓘ |
| country | Mexico ⓘ |
| describedBySource |
Mexican government archives
NERFINISHED
ⓘ
Mexican presidential decree of 18 March 1938 ⓘ historical studies of Mexican economic history ⓘ |
| followedBy |
Mexican oil boom during World War II
ⓘ
creation of Petróleos Mexicanos ⓘ |
| hasCause |
Mexican Supreme Court ruling in favor of oil workers
ⓘ
Mexican nationalism over natural resources ⓘ conflict between foreign oil companies and Mexican workers ⓘ labor dispute in Mexican oil industry ⓘ |
| hasEffect |
creation of Petróleos Mexicanos
ⓘ
deterioration of relations with the United Kingdom ⓘ economic sanctions and boycotts by some foreign governments ⓘ expulsion of major foreign oil companies from Mexico ⓘ greater popular support for Lázaro Cárdenas ⓘ inspiration for later nationalizations in Latin America ⓘ legal disputes over compensation to foreign companies ⓘ long-term increase in state revenue from oil ⓘ nationalization of foreign-owned oil companies in Mexico ⓘ reorganization of Mexican oil industry ⓘ rise of Mexico as a symbol of resource nationalism ⓘ shift in foreign investment patterns in Mexico ⓘ strengthening of Mexican state control over petroleum resources ⓘ tensions with the United States ⓘ |
| hasSignificance |
asserted Mexican control over petroleum resources
ⓘ
became a symbol of anti-imperialism in Latin America ⓘ reshaped Mexico’s economic landscape ⓘ reshaped Mexico’s political landscape ⓘ |
| legalBasis |
Article 27 of the Mexican Constitution of 1917
NERFINISHED
ⓘ
expropriation decree issued by Lázaro Cárdenas ⓘ |
| location | Mexico NERFINISHED ⓘ |
| mainSubject |
Mexican petroleum industry
NERFINISHED
ⓘ
economic sovereignty ⓘ resource nationalism ⓘ |
| participant |
British government
NERFINISHED
ⓘ
Mexican government NERFINISHED ⓘ Mexican oil workers ⓘ Royal Dutch Shell NERFINISHED ⓘ Standard Oil Company NERFINISHED ⓘ United States government NERFINISHED ⓘ foreign oil companies operating in Mexico ⓘ other British and American oil firms ⓘ |
| partOf |
history of Mexico
ⓘ
history of nationalization policies ⓘ history of the petroleum industry ⓘ |
| pointInTime |
18 March 1938
ⓘ
1938 ⓘ |
| significantPerson |
Lázaro Cárdenas
NERFINISHED
ⓘ
Vicente Lombardo Toledano NERFINISHED ⓘ leaders of Mexican oil workers’ unions ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mexican oil expropriation of 1938 Description of subject: The Mexican oil expropriation of 1938 was a landmark nationalization of foreign-owned oil companies by President Lázaro Cárdenas that asserted Mexico’s control over its petroleum resources and reshaped its economic and political landscape.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.