Virginia, Arkansas, Tennessee, and North Carolina all stayed in the Union after the mass exodus of southern states. Once Lincoln ordered all Union states to gather together troops to help fight the Confederacy, the four chose to leave the Union instead of raising arms against their "Southern Brothers" as they called it!
calling for troops
calling for troops
calling for troops
He wanted to stop the slavery and be all free states.
The Confederacy was officially wound-up about a month after Lincoln's death. There were certainly no new states wanting to join the Confederacy by then. The last four states to join were Arkansas, Tennessee, Virginia and North Carolina, after the firing on Fort Sumter in April 1861. The other four slave-states of the Upper South were partly in sympathy with the South, but still remained loyal.
Secession of South Carolina. New compromise rejected by Lincoln. Six more states join the Confederacy.
The southern states were the Confederacy. All the states from Virginia down to Texas, Florida, Mississippi etc. were in the Confederacy.
Skilful diplomacy by Lincoln in Kentucky and Missouri, along with some unlawful jailing of pro-Southern leaders in Maryland.
...secede. When Lincoln made his appeal for 75,000 volunteers, Virginia and three other states decided to join the Confederacy, making it eleven strong in all.
border states
because
Because they had pro-Southern leaders, who might easily have put pressure on the public to vote to join the Confederacy if Lincoln alienated them too much.