Why does the attack on Fort Sumpter mark the beginning of the Civil War?

The bombardment of Fort Sumter marked the beginning of the Civil War: a conflict waged over slavery. In 1860, South Carolina became the first state to secede from the United States. As more states followed suit and the Confederacy took shape, many federal installations in the South were taken over by state governments.

When the North bombed the Fort, it was breaking point for the South. It was a sign that this was war, and they were going to go all in. It seems like the North wanted to get things started, because the South had been braking from the North for a long time.

:)

um how much