South Carolina wanted to secede from the Union and the last straw for the south was the election of Abraham Lincoln. South Carolina was the first to secede. They set a date of December 1860 and voted in Charleston to leave the Union.
Confederate gold refers to the hidden caches lost or unaccounted for after the Civil War. Allegedly, some of the Confederate treasury was hidden in order to wait for the rising again of the South. Yeah, like that happened.