{"record":{"affiliations":[{"polityId":"polity-3fcc9adb88012825729f2b2c","sourceIds":["growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-life-in-brief"]}],"aliases":["James Knox Polk","President Polk"],"appointmentIds":[],"appointmentsDataset":"https://chanceries.org/diplomats.json","archivalSources":[],"canonicalUrl":"https://chanceries.org/diplopedia/people/person-1437c85c3884a7bbbfaa51cb-7e6e3e961a/","countrySlug":null,"countrySlugs":[],"entityId":"https://chanceries.org/diplopedia/people/person-1437c85c3884a7bbbfaa51cb-7e6e3e961a/#person","eventIds":[],"expandedParagraphs":["James Knox Polk served as Speaker of the House and governor of Tennessee before becoming president in 1845. An ally of Andrew Jackson, he entered office with a concentrated program of territorial expansion, tariff reduction, and financial reform. He served one term, during which the United States acquired much of its present western territory.","Polk settled the Oregon boundary dispute with Britain in 1846 by extending the forty-ninth parallel to the Pacific, with Vancouver Island remaining under British control. Relations with Mexico followed a different course. Texas’s annexation and a dispute over its southern boundary created a confrontation; Polk sent troops into the contested area between the Nueces River and Rio Grande, and fighting began in 1846. Congress declared war after Polk asserted that American blood had been shed on American soil, a claim his opponents challenged.","American forces occupied Mexico City. The Treaty of Guadalupe Hidalgo in 1848 recognized the Rio Grande as the Texas boundary and transferred California and a large southwestern territory to the United States in exchange for payment and the assumption of certain claims. The settlement imposed enormous territorial losses on Mexico and brought new disputes over citizenship, property, and the expansion of slavery within the United States.","At home, Polk secured the Walker Tariff and restored the independent treasury system in 1846. The attempt to prohibit slavery in territory acquired from Mexico, known as the Wilmot Proviso, failed but exposed a widening sectional divide. Territorial acquisition therefore undermined political compromises that had previously contained the slavery question. Polk left office in 1849 and died a few months later."],"id":"global:person-1437c85c3884a7bbbfaa51cb","identifiers":{},"identityScope":"global","legacyPersonIds":[],"legacyUrl":"https://chanceries.org/diplomat-7e6e3e961acf574b881d.html","name":"James K. Polk","notes":[],"paragraphSources":[["growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-life-in-brief"],["growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-foreign-affairs"],["growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-foreign-affairs"],["growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-domestic-affairs","growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-life-in-brief"]],"profileUrl":"diplomat-7e6e3e961acf574b881d.html","relatedEvents":[],"relatedPeople":[],"relationships":[],"researchStatus":"reviewed","reviewedOn":"2026-11-04","revision":"a33550a68cd064de","sources":[{"accessedOn":"2026-11-04","date":"","id":"growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-life-in-brief","locator":"Relevant narrative sections in the named biographical essay","publisher":"University of Virginia Miller Center","title":"James K. Polk: Life in Brief","type":"institutional","url":"https://millercenter.org/president/polk/life-in-brief"},{"accessedOn":"2026-11-04","date":"","id":"growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-foreign-affairs","locator":"Relevant narrative sections in the named biographical essay","publisher":"University of Virginia Miller Center","title":"James K. Polk: Foreign Affairs","type":"institutional","url":"https://millercenter.org/president/polk/foreign-affairs"},{"accessedOn":"2026-11-04","date":"","id":"growth-person-1437c85c3884a7bbbfaa51cb-miller-polk-domestic-affairs","locator":"Relevant narrative sections in the named biographical essay","publisher":"University of Virginia Miller Center","title":"James K. Polk: Domestic Affairs","type":"institutional","url":"https://millercenter.org/president/polk/domestic-affairs"}],"topics":[]},"schemaVersion":1}