In 1821, an African American business owner named Thomas Jennings invented the dry cleaning process and was one of the first African Americans to be granted a patent. He used the proceeds from his invention to buy his wife and children out of slavery. – WTF Fun Facts
Source: https://en.wikipedia.org/wiki/Thomas_L._Jennings
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/
The Thirteenth Amendment – WTF fun facts
Source: https://www.history.com/news/13th-amendment-slavery-loophole-jim-crow-prisons
Thomas Jefferson proposed to end slavery – WTF fun facts
