The term used to describe the Southern States exit from the United States was called succession. The Confederacy declared itself to be an independent nation.
1860
The political party formed for the election of 1860 was the Constitutional Union party and their purpose was to preserve the Union.
...victory of Lincoln in the November 1860 election.
There were 33 States in the United States in 1860. These were, in order of admission and/or ratification:DelawarePennsylvaniaNew JerseyGeorgiaConnecticutMassachusettsMarylandSouth CarolinaNew HampshireVirginiaNew YorkNorth CarolinaRhode IslandVermontKentuckyTennesseeOhioLouisianaIndianaMississippiIllinoisAlabamaMaineMissouriArkansasMichiganFloridaTexasIowaWisconsinCaliforniaMinnesotaOregon
John Bell
South Carolina
robert e .lee
robert e .lee
South Carolina seceded on December 20th 1860.
Abraham Lincoln
The first state to secede was South Carolina in December 1860. The last to leave the Union was North Carolina in May 1861.
Because Lincoln had won the 1860 election on a ticket of no new slave-states.
The first state to secede was South Carolina in December 1860. The last to leave the Union was North Carolina in May 1861.
Oddly enough, North Carolina was the last state to secede from the Union on May 20, 1861. South Carolina was the first to leave five months earlier on December 20, 1860.
1860
Constitutional union
Lincoln winning the 1860 election on a ticket of no new slave-states. It meant that the South would always be outvoted in Congress if they stayed in the USA.