18 - 21 because they can't be less because the children don't know what to do
8 years old
The youngest reported soldier in ww1 was from Britain and he was 12.
16
I don't know about the male side, but for female age distinctions, it is as follows, Youngest Mother - 5 years old Youngest Grandmother - 23 years old Youngest Great Grandmother - 42 years old Youngest Great Great Grandmother - 72 years old Youngest Great Great Great Grandmother (or the only one that was alive at the time) - 112 years old
No Pele is not the youngest, but he is the youngest to win a world cup at 17 years.
Dorothy straight was 4 years old when she wrote 'How the world began' in 1962.
Balamurali Ambati became the youngest doctor at 17 years old.
Yulla Habub
The youngest f.I.f.A player is 22 year old Lionel Messi.
12
Youngest GirlThe youngest girl is 10 years old.!!!!!!!!
12 years of age