Answer:

seceder

AnswerCrossword Clue
SECEDERSouth Carolina was the first in 1860
SECEDERUnion buster
SECEDEROne leaving the country
SECEDEROne breaking away
SECEDEROne leaving the union
SECEDEROne that formally withdraws
SECEDERSouth Carolina in 1860, for one
SECEDERJohnny Reb.
SECEDEROne who withdraws from a group.
SECEDERWithdrawer.
SECEDERDissident of 1860-61.
SECEDEROne who quits
SECEDERJeff Davis, for one
SECEDERDefector of a sort
SECEDERVirginia in 1861
SECEDERAny of 11 states in 1861
SECEDERArkansas, in 1861
SECEDERBacking-out backer
SECEDERSC in 1860
SECEDERAny of the Confederate states