How many border states were there at the start of the American Civil War?
4
5
5
5
5
2
5
2
5
2
5
3
2
5
3
2
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
5
3
2
4
9
5
3
2
4
9
5
3
2
4
9
5
7
13
3
2
4
9
5
7
13
8
6
3
2
4
9
10
5
7
13
8
6
3
2
4
9
10
5
7
13
8
6
3
2
4
9
10
5
7
13
8
6
3
2
4
9
10
7
13
8
6
1
3
2
4
11
9
10
14
7
13
8
6
1
3
2
4
11
9
10
14
7
13
8
6
1
3
2
4
11
9
10
14
7
13
8
6
1
3
4
11
9
10
14
7
13
8
6
1
3
4
11
9
10
14
7
13
8
6
1
3
4
11
9
12
10
14
7
13
8
6
1
4
11
9
12
10
14
7
13
8
6
1
4
11
9
12
10
14
7
13
8
6
1
11
9
13 states
12
10
14
7
13
8
6