Remember God Valley Incident which happened 38yrs back when Rocks pirates ultimately lost to Roger n Garp.
Now note some of the Big Mom Pirates age;
1)Charlotte Linlin- 68yrs.
2)Perospero - 50yrs.
3)Triplets(Katakuri, Oven & Daifuku) - 48yrs.
4)Brulee - 43yrs.
Which means all these kids were...