States joining Confederacy and Union

After the attack on Fort Sumter and Lincoln’s inauguration speech, four more states joined the Confederacy. However, residents of the western counties of Virginia did not wish to secede along with the rest of the state. This section of Virginia was admitted into the Union as the state of West Virginia on June 20, 1863. With Virginia's secession, Richmond was named the Confederate capitol. In June 1861, despite their acceptance of slavery, four states, Delaware, Kentucky, Maryland, and Missouri did not join the Confederacy. Although divided in their loyalties, a combination of political maneuvering and Union military pressure kept these states from seceding.