JACKSON, MISS — The United States abolished slavery with a constitutional amendment in 1865. But, there were several states that opposed the 13th amendment. The state of Mississippi did not get around to voting on it until 1995.
According to the Clarion-Ledger the ratification was not made official until a few weeks ago. A clerical error has held up the passage of the amendment from the 19th century. The state did not notify the US archivist after the vote in 1995.
The error was discovered after an associate professor at the University of Mississippi Medical Center went to see the movie Lincoln. According to Tribune media Dr. Ranjan Batraand a co-worker called up the Mississippi secretary of state. The state of Mississippi recognized the error and sent the required paperwork to the national archives.
On February 7th the Federal Register wrote back and confirmed that Mississippi had finally ratified the 13th amendment.