How many countries were in the original NATO alliance?
12
10
10
10
10
5
10
5
10
5
10
5
10
5
10
5
10
5
48
11
10
5
48
11
10
5
48
11
10
5
12
48
11
10
5
29
12
48
11
10
5
29
12
20
48
11
10
5
29
12
20
48
11
10
5
29
12
20
48
11
10
5
29
12
4
20
48
8
11
10
5
29
12
4
20
21
48
8
11
10
5
29
12
4
20
21
48
8
11
5
29
12
4
20
21
50
48
8
11
5
29
24
14
12
4
20
21
50
48
26
8
11
5
29
24
14
12
4
20
21
50
48
26
8
Four
11
15
29
24
14
12
4
20
21
50
28
48
26
8
Four
11
15
29
24
14
12
4
20
21
50
28
48
26
8
Four
11
13
15
29
24
14
12
4
20
21
50
28
48
26
8
Four
11
13
15
29
24
14
22
12
4
20
21
50
28
48
26
8
Four
11
13
25
15
29
24
14
22
19
12
4
21
Four