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I don't have sufficient context to provide an accurate overview of "1838." The context provided only indicates it's a year, but I would need additional information about what specific historical event, person, artwork, publication, or other subject matter "1838" refers to in order to write an accurate overview for a general reader.
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January 11: The Morse telegraph is first demonstrated in the U.S.
October 1: Battle of Maella November 27: Start of the First French intervention in Mexico 1838 (MDCCCXXXVIII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1838th year of the Common Era (CE) and Anno Domini (AD) designations, the 838th year of the 2nd millennium, the 38th year of the 19th century, and the 9th year of the 1830s decade. As of the start of 1838, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.