1. On March 30, 1870, the Fifteenth Amendment was officially ratified in Louisiana, granting African American men the right to vote in federal elections.

2. Louisiana native Mahalia Jackson, the "Queen of Gospel," was born on March 30, 1911. Jackson reached international fame for her powerful gospel music and memorable performances, several of which took place in her home state.

3. The Louisiana Superdome, an iconic sports and entertainment venue in New Orleans, opened on March 30, 1975. The facility has hosted a variety of high-profile events over the years, ranging from Super Bowls to major concerts.

4. Civil rights activist Oretha Castle Haley was born on March 30, 1937 in New Orleans. Haley was an instrumental figure in the local Civil Rights Movement, organizing sit-ins, protests, and other forms of peaceful resistance.

5. On March 30, 1806, American explorer and naturalist John James Audubon arrived in New Orleans for the first time. Audubon would spend much of his life in Louisiana, studying and documenting the state's diverse wildlife and natural habitat.