In America, after the adoption of the Constitution of 1787 the thought that the States were sovereign remained familiar to the minds of many, if not most, Americans. This led easily to the thought of secession by a State or States as a remedy for aggressive action on the part of the Federal Government.
The Federalists of New England made threats of secession in 1811 and 1814. As the slavery agitation began to be foremost among political issues, secession was extensively suggested as the constitutional right of the Southern States if the system of slavery was attacked. South Carolina was ready to secede in 1850. In 1860, upon news of the election of Abraham Lincoln, she did so, on December the 20th, by convention, which passed an ordinance purporting to repeal her adoption of the Constitution in 1788 and to revive her independence. Mississippi seceded on January the 9th, 1861, Florida on January the 10th, Alabama on January the 11th, Georgia on January the 19th, Louisiana on January the 26th, Texas on February 1st, all by conventions. These seven States formed the Confederate States of America, on February the 4th, 1861.
Buchanan's government could find no constitutional warrant for coercing a seceded State. After the firing on Fort Sumter and the decision of Abraham Lincoln and the North to suppress rebellion by armed force, four more States seceded - Arkansas on May the 6th, North Carolina on May the 20th, Virginia on May the 23rd and Tennessee on June the 8th. In most of these States there had been strong opposition to secession, but on the ground that it was inexpedient. That a State had a right to secede was the nearly universal belief. The national Government never recognized this right, nor the validity of the ordinances. Research Secession
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Research Secession