How many regions are there in the United States?
7
8
8
5
8
5
8
4
5
8
4
5
6
8
4
ten
5
6
10
8
4
5
6
10
8
ten
9
4
5
6
10
8
7
ten
9
4
5
3
6
10
8
7
9
4
ten
5
3
6
10
8
7
9
4
5
3
6
10
8
7
ten
9
4
5
3
6
10
8
7
ten
9
4
5
2
3
6
10
8
7
9
4
ten
5
2
3
6
10
8
7
9
4
5
2
3
6
10
8
7
ten
9
4
5
2
3
6
10
8
7
ten
9
12
14
4
5
2
3
6
10
8
7
9
12
14
4
1
ten
5
76
2
3
6
10
8
7
9
12
14
4
4 regions
1
58
5
8 regions
2
3
6
10
8
7
ten
76
9
12
14
4
1
5
2
94
3
6
10
58
7
ten
9
12
76
14
4
4 regions
1
5
8 regions
20
2
3
6
61
10
7
94
58
135
96
9
12
14
4
1
50
ten
76
20
2
3
6
10
7
62
61
89