How many World Wars happened in the 1900s?
5
2
3
2
3
2
3
2
3
2
1
3
2
1
3
2
1
3
4
2
1
3
4
2
1
3
4
2
1
3
4
2
1
3
4
2
1
3
4
2
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
2
5
1
3
4
0
2
5
1
3
4
0
5
1
4
5
1
0
4
5
1
4
0
5
1
4
0
5
6
4
7
5
0
6
4
7
5
6
0
7
5
6
7
5
6
7
5
6
7
5
6
7
5
6
7
5
6
7
6
7
8
6
9
7
8
6
One
9
7
8
6
One
9
Two
7
8
6
One
10
9
Two
7
8
6
One
11
3 Wars
10
9
Two
7
8
6
One
11
10
9
Two
7
8
2 Wars
6
One
ONE
11
3 Wars
10
9
Two
7
8
6
One
11
ONE
13
10
9
Two
7
8
2 Wars
6
One
11
3 Wars
13
10
9
Three
Two
7
ONE