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1780

year

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I don't have sufficient context to write an accurate overview of "1780" as requested. The context provided only indicates "year," which doesn't specify what "1780" refers to—it could be a historical year, a book, a film, an event, or something else entirely. To write an accurate 2-sentence overview based only on provided context as you've instructed, I would need more specific information about what "1780" is.

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Commons category: 1780
point in time: 1780-01-01

via Wikidata · CC0

~12 min read

Article

September 21: American Major General Benedict Arnold, commander of West Point, commits treason by supplying information to Britain's Major John Andre.

May 29: Waxhaw Massacre in America. 1780 (MDCCLXXX) was a leap year starting on Saturday of the Gregorian calendar and a leap year starting on Wednesday of the Julian calendar, the 1780th year of the Common Era (CE) and Anno Domini (AD) designations, the 780th year of the 2nd millennium, the 80th year of the 18th century, and the 1st year of the 1780s decade. As of the start of 1780, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.