USA HISTORY

Detailed explanation-1: -secession, in U.S. history, the withdrawal of 11 slave states (states in which slaveholding was legal) from the Union during 1860–61 following the election of Abraham Lincoln as president. Secession precipitated the American Civil War.

Detailed explanation-2: -Some have argued for secession as a constitutional right and others as from a natural right of revolution. In Texas v. White (1869), the Supreme Court ruled unilateral secession unconstitutional, while commenting that revolution or consent of the states could lead to a successful secession.

Detailed explanation-3: -Constitutionally, there can be no such thing as secession of a State from the Union. But it does not follow that because a State cannot secede constitutionally, it is obliged under all circumstances to remain in the Union.