According to the
1860 Census, Charleston was the 22nd largest city in the United States, with a population of 40,522. As the 1814
Burning of Washington had shown, America's coastal cities were vulnerable to a hostile fleet. The United States began building substantial forts along the Atlantic seaboard, including Fort Sumter, on a shoal in
Charleston harbor. Smaller and older forts and bastions helped protect the fort from enemy ships. after South Carolina secession
Charleston became the confederacy second largest city Behind
New Orleans Beginning with the
Missouri Compromise in 1820,
proslavery thought and the defense of
slavery, more than tariffs or
states' rights, fomented sectionalism in South Carolina. White southerners feared slave revolts; half of the state's population were enslaved Black people. Following the
1860 United States presidential election of Abraham Lincoln, South Carolina convoked
a secession convention to consider withdrawing from the United States in light of restrictions on the expansion of slavery into U.S. territories. On December 20, 1860, the convention voted to
declare secession from the United States, the first state to do so, citing Lincoln's opposition to expanding slavery to territories outside where it was already present in current U.S. states. The Secession Convention declared: Following its declared secession from the United States in December, South Carolina
militia seized
Castle Pinckney and the
Charleston Arsenal and their supplies of arms and ammunition. On January 9, 1861,
Citadel cadets fired upon the merchant ship USS
Star of the West as it was entering Charleston's harbor to resupply U.S. soldiers garrisoned at Fort Sumter. The Buchanan administration had sent the ship with relief supplies of men and matériel. As the
Confederate States of America organized late that winter, old and abandoned forts were reoccupied around Charleston to target the massive, though incomplete, U.S. Army fort. Just as President Lincoln was inaugurated,
Jefferson Davis appointed
P. G. T. Beauregard to command the siege of Fort Sumter. Informed by the Lincoln administration that a supply ship, with food but no men or munitions, was to restock the fortress, Davis, after consulting with his cabinet on April 9, ordered Beauregard to capture the fort before it was resupplied. On April 12, at 3:20 AM, Robert Chestnut sent a final ultimatum to the commander of the garrison, U.S. Major
Robert Anderson. Chestnut threatened that in one hour, the batteries commanded by Beauregard would open fire. Anderson had been a professor of artillery at the
United States Military Academy, and had instructed Beauregard. After a 34-hour bombardment, Anderson surrendered the fort. Throughout much of the war, Citadel cadets continued to aid the
Confederate Army by drilling recruits, manufacturing ammunition, protecting arms depots, and guarding U.S. prisoners-of-war. attacking at the
Second Battle of Fort Wagner On December 11, 1861, a massive fire burned 164 acres of the city, destroying the
Cathedral of Saint John and Saint Finbar, the Circular Congregational Church and South Carolina Institute hall, and nearly 600 other buildings. Much of the damage remained unrepaired until the end of the war. Amos Gadsden, a formerly enslaved person, recounted that a balloon started it while Union and Confederate troops were camped on opposite sides of the river. Many in the North saw this fire as divine retribution for secession. In June 1862, the
Battle of Secessionville, on modern-day
James Island, South Carolina, was the only U.S. Army effort to retake control of Charleston by land during the war. Confederate forces defeated the effort by U.S. Brigadier General
Henry Washington Benham. ==Later war years==