1. In 1791, Columbia was officially declared the capital of South Carolina. This decision was made after the previous capital, Charleston, was severely damaged by a fire in 1788.

2. On December 15, 1864, Union General William T. Sherman and his troops began their march through South Carolina during the Civil War. This campaign, known as the "Carolinas Campaign," resulted in significant destruction and devastation throughout the state.

3. In 1933, South Carolina ratified the 21st Amendment to the United States Constitution, which repealed the Prohibition of alcohol. This amendment had been ratified by the required number of states earlier that year, and December 15 was the day that South Carolina officially joined them.

4. On this day in 1960, the first run of the Charleston to Cincinnati interstate bus began service. This route was part of the Greyhound Bus Lines and provided a direct connection between two major cities in the eastern United States.

5. In 2010, the Charleston Nine Memorial was unveiled in Charleston, South Carolina. This memorial honors the nine firefighters who died in the June 2007 Sofa Super Store fire, which was the deadliest event for firefighter fatalities in the United States since the September 11 attacks in 2001. The unveiling of the memorial on December 15 was timed to coincide with the Feast of St. Florian, the patron saint of firefighters.