Mississippi only ratified the 13th amendment, which abolished slavery back in 1865, in 1995. However, they never officially notified the US Archivist and so it had to be corrected and was finally ratified in 2013. – WTF Fun Facts
Source: https://abcnews.go.com/blogs/headlines/2013/02/mississippi-officially-abolishes-slavery-ratifies-13th-amendment/
