{"id":3642,"canonical_url":"https://www.kudos365.com/today-in-history/events/1223ce-mar-31--3642","name":"1223 CE, March 31","year":1223,"era":"CE","month":3,"day":31,"url":"https://www.kudos365.com/today-in-history/events/1223ce-mar-31--3642","iso-date":"1223-03-31","precision":"year-month-day","description":"\u003cp\u003eMongol invasion of Central Asia: The Battle of the Kalka River takes place on May 31, 1223 between the Mongol Empire and Kievan Rus principalities and Cumans in modern-day Ukraine. The battle resulted in a decisive victory for the Mongol Empire.\u003cbr\u003e\u003c/p\u003e","additional_details":"","photo":"","created_at":"2025-03-31T09:51:27-07:00","updated_at":"2026-03-18T16:32:26-07:00","breadcrumbs":{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"March History","item":"https://www.kudos365.com/today-in-history/march"},{"@type":"ListItem","position":2,"name":"March 31","item":"https://www.kudos365.com/today-in-history/march-31"}]},"schema":{"@context":"https://schema.org","@type":"Thing","@id":"https://www.kudos365.com/today-in-history/events/1223ce-mar-31--3642#eventK365","name":"1223 CE, March 31","headline":"Mongol invasion of Central Asia: The Battle of the Kalka River takes place on May 31, 1223 between the... - 1223 CE","description":"Mongol invasion of Central Asia: The Battle of the Kalka River takes place on May 31, 1223 between the Mongol Empire and Kievan Rus principalities and Cumans...","url":"https://www.kudos365.com/today-in-history/events/1223ce-mar-31--3642","additionalType":"HistoricalEvent","inLanguage":"en","datePublished":"2025-03-31T09:51:27-07:00","dateModified":"2026-03-18T16:32:26-07:00","publisher":{"@id":"https://www.kudos365.com/#organizationK365"},"temporalCoverage":"1223-03-31","isPartOf":[{"@id":"https://www.kudos365.com/#websiteK365"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/march","name":"What Happened in March History"},{"@type":"CollectionPage","@id":"https://www.kudos365.com/today-in-history/march-31#pageK365","name":"What Happened on March 31"}]}}