1. On May 3, 1963, the peaceful Civil Rights Campaign in Birmingham, Alabama, also known as the Children's Crusade, was met with violent resistance from law enforcement authorities. The events of that day, which included police dogs and fire hoses being turned on the protesters, were televised across the country, leading to increased national support for the Civil Rights Movement.

2. On May 3, 1803, Thomas Jefferson negotiated the Louisiana Purchase, a land deal that would double the size of the United States. The purchase included all or part of 15 current U.S. states, including portions of Mississippi.

3. In 1822, the first steamboat to navigate the waters of the Mississippi River arrived in Natchez, Mississippi. The steamboat revolutionized transportation and commerce in the region, making it easier to transport goods and people up and down the river.

4. On May 3, 1863, during the Civil War, the Battle of Port Gibson took place in Mississippi. Confederate forces were defending the town of Port Gibson against Union troops, but were ultimately pushed back, leading to the fall of Vicksburg and the eventual surrender of Confederate forces in the Mississippi River Valley.

5. In 1934, the historic King Edward Hotel in downtown Jackson, Mississippi, opened its doors. The hotel was frequented by many famous guests over the years, including Elvis Presley, Duke Ellington, and Jayne Mansfield. Today, it has been converted into luxury apartments and retail space.