In what year was slavery abolished in Mississippi?

The official abolition was in 1833.

In 1995, the state legislature symbolically ratified the Thirteenth Amendment.

However the paperwork was not submitted to the Federal government. This was discovered by a professor who watched the movie Lincoln at the end of 2012, and he ensured that in 2013 the paperwork was finally completed, so the official abolishing of slavery by the state Mississippi was in 2013.