How many regions are there in the United States?
7
5
4
5
4
3
5
4
3
5
4
3
5
4
3
5
4
3
5
4
3
5
4
3
5
4
3
5
4
3
6
7
5
4
3
6
7
2
5
4
3
6
7
2
5
4
3
6
7
2
5
4
3
6
7
2
8
5
4
3
6
7
2
8
5
4
3
6
9
7
2
8
5
4
3
6
11
9
7
2
8
5
4
1
3
6
11
9
7
2
8
10
5
4
1
3
6
11
9
7
2
8
10
5
4
1
3
6
11
9
7
2
8
10
1
3
6
11
9
7
2
8
10
13
1
12
6
11
9
7
2
8
10
13
1
12
6
11
9
7
2
8
10
13
1
12
6
11
9
7
2
8
10
13
16
1
12
6
11
9
7
2
8
10
13
16
1
12
6
11
0
9
7
2
8
10
13
16
1
12
6
11
9
14
7
2
8
10
13
1
11
512
66
132
63
62
67
133
136
111
128