Tennessee
The last state to secede from the Union was the North Carolina.
The last state to secede from the Union was Texas. On February 1, 1861, Texas officially declared its secession from the United States, joining the Confederate States of America. However, after the end of the Civil War, Texas was readmitted to the Union on March 30, 1870.
I would say that the first Confederate state is South Carolina because it was the first state to leave the Union(secede).
They didn't "secede to" anything, but to form a new government called the Confederate States.
The first Confederate state to secede from the Union was South Carolina. This decision was made on December 20, 1860, following the election of Abraham Lincoln as President. South Carolina's secession was a key event that led to the formation of the Confederate States of America and the outbreak of the Civil War.
For all practical purposes the Confederate Congress believed that a state in the US could hold a vote to remain a member of the US. The results would be either a yes to secede or a no not to secede. The US Constitution is silent about secession. To avoid future political problems, they created a constitution that did not allow for any Confederate state to secede. Thereby, alerting all states joining the Confederacy to understand that this would be a final decision.
Davis represented Mississippi and that was a Confederate state and the second state to secede from the Union.
North Carolina-
South Carolina was the first of the Confederate States to secede from the United States.
Tennessee was the last state to secede from the Union. It was also the first to rejoin.
South Carolina was the first to secede.