Ordinance of Secession in the context of "Texas secession movements"

The Battle of Fort Sumter (also the Attack on Fort Sumter or the Fall of Fort Sumter) (April 12–13, 1861) was the bombardment of Fort Sumter near Charleston, South Carolina, by the South Carolina militia. It ended with the surrender of the fort by the United States Army, beginning the American Civil War.

Following the declaration of secession by South Carolina on December 20, 1860, its authorities demanded that the U.S. Army abandon its facilities in Charleston Harbor. On December 26, Major Robert Anderson of the U.S. Army surreptitiously moved his small command from the vulnerable Fort Moultrie on Sullivan's Island to Fort Sumter, a substantial fortress built on an island controlling the entrance of Charleston Harbor. An attempt by U.S. President James Buchanan to reinforce and resupply Anderson using the unarmed merchant ship Star of the West failed when it was fired upon by shore batteries on January 9, 1861. The ship was hit three times, which caused no major damage but nonetheless kept the supplies from reaching Anderson.

Georgia was one of the original seven slave states that formed the Confederate States of America in February 1861, triggering the U.S. Civil War. The state governor, Democrat Joseph E. Brown, wanted locally raised troops to be used only for the defense of Georgia, in defiance of Confederate president Jefferson Davis, who wanted to deploy them on other battlefronts. When the Union blockade prevented Georgia from exporting its plentiful cotton in exchange for key imports, Brown ordered farmers to grow food instead, but the breakdown of transport systems led to desperate shortages.

There was not much fighting in Georgia until September 1863, when Confederates under Braxton Bragg defeated William S. Rosecrans at Chickamauga Creek. In May 1864, William T. Sherman started pursuing the Confederates towards Atlanta, which he captured in September, in advance of his March to the Sea. This six-week campaign destroyed much of the civilian infrastructure of Georgia, decisively shortening the war. When news of the march reached Robert E. Lee's army in Virginia, whole Georgian regiments deserted, feeling they were needed at home. The Battle of Columbus, fought on the Georgia-Alabama border on April 16, 1865, is reckoned by some criteria to have been the last battle of the war.

The history of West Virginia stems from the 1861 Wheeling Convention, which was an assembly of northwestern Southern Unionist from northwestern counties of the state of Virginia. They formed the Restored Government of Virginia, which purported to represent the government of the entire state of Virginia but in fact only represented those areas controlled by the Union army. It was recognized as the official government of the state of Virginia by Congress, and it repealed the Ordinance of Secession that Virginia made at the start of the American Civil War (1861–1865). It created West Virginia from the western counties under Union Army control. The new state was formed and recognized by the U.S. Congress on June 20, 1863, and protected by the U.S. Army.

The area that comprises West Virginia was originally part of the British Virginia Colony (1607–1776) and the western part of the U.S. Commonwealth of Virginia (1776–1788), and state of Virginia (1788–1863). Western Virginia became sharply divided over the issue of secession from the Union, leading to the separation from Virginia, and formalized by West Virginia's admittance to the Union as a new state in 1863. West Virginia was one of five Civil War border states.

The origins of the American Civil War were rooted in the desire of the Southern states to preserve and expand the institution of slavery. Historians in the 21st century overwhelmingly agree on the centrality of slavery in the conflict, but they disagree on the North's reasons for refusing to allow the Southern states to secede. The negationist Lost Cause ideology denies that slavery was the principal cause of the secession, a view disproven by historical evidence, notably some of the seceding states' own secession documents. After leaving the Union, Mississippi issued a declaration stating, "Our position is thoroughly identified with the institution of slavery—the greatest material interest of the world."

Background factors in the run up to the Civil War were partisan politics, abolitionism, nullification versus secession, Southern and Northern nationalism, expansionism, economics, and modernization in the antebellum period. As a panel of historians emphasized in 2011, "while slavery and its various and multifaceted discontents were the primary cause of disunion, it was disunion itself that sparked the war."