1. In 1874, the Mississippi State Agricultural and Mechanical College (now Mississippi State University) was founded on March 21 by an act of the Mississippi Legislature.

2. On March 21, 1935, the infamous Huey P. Long Bridge was opened over the Mississippi River, connecting Jefferson Parish to Orleans Parish in Louisiana. The bridge was named after Governor Huey P. Long, who was assassinated in 1935.

3. In 1963, civil rights leader Medgar Evers spoke at a rally at Jackson State University on March 21, where he encouraged students to get involved in the movement for equal rights. Evers was assassinated just a few months later.

4. On March 21, 1986, the Mississippi Legislature officially designated the Magnolia as the state flower of Mississippi. The Magnolia is known for its beautiful white flowers and is a symbol of the state's hospitality and grace.

5. In 2017, the Mississippi Supreme Court upheld a lower court ruling that blocked the state from enforcing a law that allowed businesses and government officials to deny services to same-sex couples on the basis of religious objections. The ruling was made on March 21 and was seen as a victory for LGBTQ rights in Mississippi.