Which of the states left the union just after the civil war

South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas— and Virginia, Arkansas, Tennessee, and North Carolina threatened to leave.

Hope that helps!

Convinced that their way of life based on slavery was irrelevable threatened by the election of pres. Abraham Lincoln (November 1869) the seven states of the Deep South (Alabama,Florida,Georgia,Louisiana,Mississippi, South Carolina and Texas) secede from the union during the following months