Maryland, Delaware, Kentucky, Missouri (divided loyalties)
Maryland: finely balanced; stayed by choice of fed govt
-Baltimore riot: pro sec mob attacked Northern troops
-suspended HABEAS CORPUS + key routes in Maryland, allowing North to imprison key politicians/newspaper editors
Delaware: 90% black population free, narrowly voted to stay
Kentucky: tried to declare neutrality
-Linc said key to keeping (would loose Missouri) BOTH stay
Key Reasons for border states NOT joining CSA
-presence of US armed forces
-Linc acting more quickly and decisively than Davis