The States that made up the Confederacy:

[appalachiablue]

17. West Virginia wasn't part of the Confederacy,

the western and northern counties of Va. broke away from the Old Dominion over the Civil War and seceded in spring 1861.

West Virginia became a Union state on June 20, 1863. The Mountaineer State had Union regiments and also a few informal Confederate units I think.

Maryland had a large amount of slavery but stayed out of the Confederacy. Eastern Md. was particularly noted for slave residents, farms, plantations and well known African Americans Harriet Tubman and Frederick Douglass who were born and raised there.

Neighbor state Delaware, esp. the lower part was an agricultural area utilizing with black labor although it was in the Union.