Question

Which state was the first state to secede the union​

Answer 1

South Carolina

It became the first state to declare its secession from the Union on December 20, 1860, with the Declaration of the Immediate Causes Which Induce and Justify the Secession of South Carolina from the Federal Union and later joined with the other southern states in the Confederacy.

Answer 2

According to Wikipedia South Carolina became the first state to declare its secession from the Union on December 20, 1860, with the Declaration of the Immediate Causes Which Induce and Justify the Secession of South Carolina from the Federal Union and later joined with the other southern states in the Confederacy.