What regime controlled Haiti beginning in 1957, and when did the regime fall?

the soviet union wanted to impose communist governments in eastern europe.

letter a is the answer

this problem is a math riddle where in you need to solve a series of questions to get the answer. the following are the answers with their corresponding letter:

8 = n = 9 1/8

15 = t = 12 4/9

14 = i = 12 7/15

10 = h = 8 7/12

12 = c = 14 1/18

13 = k = 12 ½

11 = a = 9 5/8

6 = l = 14 1/10

5 = u = 6 3/8

7 = d = 6 ½

2 = e = 14 3/10

4 = o = 8 23/24

9 = t = 12 ¾

1 = h = 7 17/24

3 = c = 9 7/20

the answer is he couldn’t hack it.