Which chain of events order is correct?
1.)Pres. Davis sworn in; President Lincoln sworn in; southern states secede, Fort Sumter
2.)Pres. Lincoln sworn in; Fort Sumter; southern states secede; Pres. Davis sworn in
3.)southern states secede; Pres. Davis sworn in; President Lincoln sworn in, Fort Sumter
4.)Fort Sumter; Southern states secede; Pres. Davis sworn in; Pres. Lincoln sworn in