{"id":700,"canonical_url":"https://www.kudos365.com/today-in-history/events/1800ce-oct-1--700","name":"1800 CE, October 1","year":1800,"era":"CE","month":10,"day":1,"url":"https://www.kudos365.com/today-in-history/events/1800ce-oct-1--700","iso-date":"1800-10-01","precision":"year-month-day","description":"\u003cp\u003eThe Treaty of San Ildefonso is signed on October 1, 1800 between France and Spain, whereby Spain returned the Louisiana territory to France. This treaty was a critical link in the chain of events which led to the 1803 Louisiana Territory Purchase by the United States.\u003c/p\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e","additional_details":"\u003cp\u003eThe treaty was basically a territorial exchange; Louisiana tfor France in support of the then, imperial ambitions of Napoleon Bonaparte in North America and Spain received a newly formed kingdom on the Italian peninsula (later known as the Kingdom of Etruria in Tuscany) for the Duke of Parma, the son-in-law of the Spanish King. This treaty was a critical link in the chain of events which led to the 1803 Louisiana Territory Purchase by the United States.\u003c/p\u003e","photo":"","created_at":"2025-03-17T06:30:27-07:00","updated_at":"2026-02-08T17:26:41-08:00","breadcrumbs":{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"October History","item":"https://www.kudos365.com/today-in-history/october"},{"@type":"ListItem","position":2,"name":"October 1","item":"https://www.kudos365.com/today-in-history/october-1"}]},"schema":{"@context":"https://schema.org","@type":"Thing","@id":"https://www.kudos365.com/today-in-history/events/1800ce-oct-1--700#eventK365","name":"1800 CE, October 1","headline":"The Treaty of San Ildefonso is signed on October 1, 1800 between France and Spain, whereby Spain returned... - 1800 CE","description":"The Treaty of San Ildefonso is signed on October 1, 1800 between France and Spain, whereby Spain returned the Louisiana territory to France. This treaty was...","url":"https://www.kudos365.com/today-in-history/events/1800ce-oct-1--700","additionalType":"HistoricalEvent","inLanguage":"en","datePublished":"2025-03-17T06:30:27-07:00","dateModified":"2026-02-08T17:26:41-08:00","publisher":{"@id":"https://www.kudos365.com/#organizationK365"},"temporalCoverage":"1800-10-01","isPartOf":[{"@id":"https://www.kudos365.com/#websiteK365"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/october","name":"What Happened in October History"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/october-1#pageK365","name":"What Happened on October 1"}]}}