How many states became part of the U.S. in 1959?
2
2
2
2
2
2
2
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
5
2
1
3
5
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
0
3
5
4
1
3
5
4
0
1
13
3
5
4
1
0
13
3
5
4
9
1
13
0
3
5
4
9
7
1
13
3
5
4
0
9
7
6
1
13
5
4
9
7
6
13
5
4
9
7
6
13
5
4
9
7
6
13
5
4
9
7
6
13
5
4
9
7
6
13
10
5
4
9
7
6
13
10
11
4
9
7
6
13
10
11
4
8
9
7
6
13
10
11
8
9
12
7
6
13
10
11
8
9
12
7
6
14
13
10
11
8
9
12
7
6
14
13
21
10
11
8
9
12
7
6
14
13
21
20
10
11
8
9
12
7
ten
ten